Core Molding Technologies
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1
UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K



(Mark One)
[X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934
FOR THE FISCAL YEAR ENDED . . . . . . . . . . . . . .DECEMBER 31, 1996

OR

[ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES
EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM ____________ TO
_____________

COMMISSION FILE NUMBER 001-12505

CORE MATERIALS CORPORATION
(Exact name of registrant as specified in its charter)

Delaware 31-1481870
(State or other jurisdiction of (I.R.S. Employer
incorporation or organization) Identification No.)

800 Manor Park Drive,
P.O. Box 28183
Columbus, Ohio 43228 - 0183
(Address of principal executive offices) (Zip Code)

Registrant's telephone number, including area code: (614) 870-5000

Securities registered pursuant to Section 12(b) of the Act:

Title of each class Name of each exchange on which registered
Common Stock, par value $.01 American Stock Exchange, Inc.

Securities registered pursuant to Section 12(g) of the Act:
None
(Title of class)
2


Indicate by check mark whether the registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities Exchange Act of
1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filing requirements for the past 90 days. Yes X No
-- --

Indicate by check mark if disclosure of delinquent filers pursuant to
Item 405 of Regulation S-K is not contained herein, and will not be contained,
to the best of registrant's knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K. [X]


As of March 27, 1997, 9,514,800 shares of Core Materials Corporation
common stock were outstanding, and the aggregate market value of the shares held
by non-affiliates (based upon the closing price of the common stock on that date
as reported on the American Stock Exchange Composite Tape) was approximately
$34,491,150.

DOCUMENTS INCORPORATED BY REFERENCE

1. Registrant's 1997 definitive Proxy Statement to be filed with the
Securities and Exchange Commission no later than 120 days after the end
of the registrant's fiscal year is incorporated herein by reference in
PART III of this Form 10-K.



2
3


PART I

ITEM 1. BUSINESS.

BACKGROUND

On October 8, 1996, RYMAC Mortgage Investment Corporation ("RYMAC")
formed Core Materials Corporation ("Core Materials" or the "Company") as a
wholly owned subsidiary under the laws of the State of Delaware. RYMAC
incorporated Core Materials in order to acquire substantially all of the assets
of the Columbus Plastics operating unit of Navistar International Transportation
Corp. ("Navistar"). The discussion in Part I of this Form 10-K provides an
overview of the historical business of RYMAC, its decision to incorporate Core
Materials, and the current business of Core Materials.

HISTORICAL BUSINESS OF RYMAC AND INCORPORATION OF CORE MATERIALS

Historical Business of RYMAC

RYMAC was incorporated in the State of Maryland on July 1, 1988. RYMAC
elected to be a real estate investment trust ("REIT") under the Internal Revenue
Code of 1986, as amended (the "Code").(1)

Prior to 1994, RYMAC was primarily engaged in making investments in
mortgage derivative securities and, to a lesser extent, mortgage related
investments, all of which were secured by single-family residential mortgage
loans. RYMAC also generated revenues from other sources, such as interest
earnings on certain investments and sales of certain investments. In 1995, RYMAC
purchased one 7% Federal National Mortgage Association ("FNMA") guaranteed
pass-through certificate backed by 30 year single-family mortgage loans. The
principal balance at December 31, 1996 was approximately $3.3 million.

During the period from RYMAC's inception in 1988 through early 1992,
mortgage interest rate levels and prepayment speeds remained within ranges
existent from 1970 to early 1992. From early 1992 to early 1994, mortgage rates
declined to levels lower than those existent for the prior 20 year period and,
in fact, in the fall of 1993, declined to the lowest level in 25 years. The
decline in mortgage rates and the availability of mortgage monies from a wide
variety of lenders produced an unprecedented level and sustained duration of
mortgage refinancings which directly resulted in unparalleled early mortgage
prepayments.

Initially, the result of such prepayment levels sharply reduced
interest and dividend earnings on RYMAC's assets. As the duration of these rapid
prepayments extended, RYMAC's cash flows from interest and dividends and returns
on invested principal were severely impaired, eventually being reduced to levels
sufficient only to repay RYMAC's borrowings, pay operating

- ----------
(1) With the acquisition of Navistar's Columbus Plastics operation, Core
Materials did not qualify as a REIT and became subject to income and franchise
taxes on its income to the extent that it could not offset such income with net
operating loss or capital loss carryforwards.
4

expenses and fund minimal dividend distributions. This deterioration of asset
performance began in the second quarter of 1992 and continued throughout 1993
and 1994, causing permanent impairment to a number of RYMAC's assets. For a
substantial portion of RYMAC's assets, especially those with substantial cost
basis premiums, the rapid prepayment scenario produced cash flows that did not
recover the investment basis.

Simultaneously, generally accepted accounting principles required
quarterly asset valuations that produced write-downs in the value of a majority
of RYMAC's assets. Such write-downs were reflected as reductions to the interest
revenues on RYMAC's Statements of Revenues and Expenses.

The result of these earnings difficulties and the altered mortgage
securities market that emerged after the prepayment cycle of 1992-1994 caused
RYMAC's Board of Directors in mid-1994 to determine that it would not pursue its
historical line of business and would investigate alternative opportunities to
maximize stockholder value.(2) In this regard, RYMAC's Board of Directors
focused its efforts on finding and evaluating acquisition candidates. This
process led to negotiations with Navistar for the acquisition of Columbus
Plastics.

Incorporation of Core Materials and the Acquisition of Columbus Plastics

RYMAC entered into an Asset Purchase Agreement with Navistar, dated
September 12, 1996, as amended on October 31, 1996, December 16, 1996 and
January 31, 1997, this third amendment providing for the post-closing adjustment
for the Secured Note due Navistar discussed below, (as amended, the "Asset
Purchase Agreement"). Navistar is the wholly owned operating subsidiary of the
holding company, Navistar International Corporation. The manufacturing
operations of Navistar are responsible for the manufacture and marketing of
medium and heavy-duty trucks, including school buses, mid-range diesel engines
and service parts, primarily in the United States and Canada, as well as in
selected export markets.

Columbus Plastics historically constituted a part of Navistar's
manufacturing business and was not a separate entity apart from Navistar.
Navistar had used its Columbus Plastics operations to manufacture fiberglass and
plastic component parts for use by Navistar in Navistar's business of
manufacturing and marketing medium- and heavy-duty trucks and for sales to third
party customers, primarily Yamaha Motor Manufacturing Corporation ("Yamaha"),
for use in its personal watercraft business. Prior to the acquisition, in excess
of 60% of all component parts produced by Columbus Plastics were sold to
Navistar at the standard cost basis of Columbus Plastics which was substantially
below the market value of such component parts.

The Asset Purchase Agreement between Navistar and RYMAC provided for
the acquisition by RYMAC of substantially all of the assets of Columbus
Plastics. Navistar's obligation to consummate the acquisition, however, was
conditioned (among other things) on the reincorporation of RYMAC in the State of
Delaware. In order to effect the reincorporation,

- ----------
(2) The Company had maintained a portfolio of assets from its historical
business, selectively selling assets to generate liquidity as market conditions
were appropriate. At the acquisition, Core Materials maintained ownership of
the FNMA certificate described above.

-2-
5



RYMAC formed Core Materials as a wholly owned subsidiary, incorporated under
the laws of the State of Delaware.

RYMAC subsequently merged with and into Core Materials. The merger took
place pursuant to the terms of the Asset Purchase Agreement and Agreement and
Plan of Merger, dated November 1, 1996, by and between RYMAC and Core Materials
(the "Agreement and Plan of Merger"). Core Materials was the surviving
corporation in the merger with each outstanding share of RYMAC common stock
being converted into the right to receive one share of Core Materials common
stock.

Pursuant to the terms of the Asset Purchase Agreement, RYMAC acquired
substantially all of the assets and liabilities of Columbus Plastics on December
31, 1996. As consideration, Navistar received a secured note (the "Secured
Note") in the principal amount of $25,504,000. Navistar also received 4,264,000
shares of newly issued common stock of Core Materials. The principal amount of
the Secured Note and the number of shares of common stock received by Navistar
were subject to adjustment pursuant to the terms of the Asset Purchase
Agreement. Effective December 31, 1996, the amount of the Secured Note was
increased to $29,514,000 in order to reflect an increase in the "net tangible
assets" of Columbus Plastics as of the December 31, 1996 acquisition date. In
addition, Navistar will receive future consideration in the form of an increase
in the principal amount on the Secured Note if Core Materials achieves
earnings results above specified levels during the period 1997 through 1999.
Should there be additional future consideration, it will be accounted for by
increasing the amount of the Secured Note, and by reducing the amount of Core
Materials' retained earnings.

Accounting Treatment

Based upon the terms of the acquisition, the transaction for financial
reporting and accounting purposes has been accounted for as a reverse
acquisition whereby Columbus Plastics is deemed to have acquired Core Materials.
Core Materials, however, is the continuing legal entity and registrant for both
Securities and Exchange Commission filing purposes and income tax reporting
purposes. Consistent with reverse acquisition accounting treatment Core
Materials has carried forward the historical basis of the acquired assets and
assumed liabilities of Columbus Plastics and has revalued the basis of its net
assets to fair value at December 31, 1996.


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CURRENT BUSINESS OF CORE MATERIALS

Certain statements under this caption constitute "forward-looking
statements" which involve certain risks and uncertainties. Core Materials'
actual results may differ significantly from those discussed in the
forward-looking statements. Factors that may cause such a difference include,
but are not limited to, those discussed in the section entitled "Management's
Discussion and Analysis of Financial Condition and Results of Operations" as
well as those discussed elsewhere in this Form 10-K.

Description of Business of Core Materials

Core Materials operates principally in one business segment, the
production of high quality compression Sheet Molding Composite ("SMC")
fiberglass reinforced plastic parts. SMC plastics are part of a larger family of
materials collectively known as "reinforced plastics." Reinforced plastics are
combinations of resins and reinforcing fibers formed through high or low
pressure fabrication techniques.

Reinforced plastics compete largely against metals and have the
strength to function well during prolonged use. Management believes that
reinforced plastic components offer many advantages over metals, including:

- heat resistance
- corrosion resistance
- lighter weight
- lower cost
- greater flexibility in product design
- part consolidation for multiple piece assemblies
- lower initial tooling costs for lower volume applications
- high strength-to-weight ratio
- dent-resistance in comparison to steel or aluminum.

The largest markets for reinforced plastics, by volume of production,
are automotive and land transportation, construction, corrosion-resistance
products, marine, and electrical and electronic applications.

Selection of an SMC supplier and distribution of SMC usually involves a
competitive selection process in which an original equipment manufacturer
("OEM") solicits bids for the production of a component. After assessing each
supplier's ability to manufacture the component, the OEM selects one supplier to
work with the OEM's design team. The plastic supplier is generally selected to
supply a component a year or two in advance of production. Once selected, the
plastic supplier generally supplies the component for the life of the product


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model. The Company's products have model lives that range from approximately two
to eight years.

Major Competitors

The Company's industry is highly competitive. Core Materials faces
competition from a number of companies, some of whom are larger and have greater
financial resources, research and development facilities, and manufacturing and
marketing capabilities than Core Materials. In addition, many OEM customers
manufacture, engineer and design some of their own components, rather than
relying on suppliers of SMC.

Core Materials' major competitors include Budd Plastics, Cambridge
Industries, Eagle-Picher, Goodyear Plastics and Molded Fiberglass Corporation.
Core Materials believes that it is one of the largest producers of SMC in the
United States and Canada. Core Materials competes primarily on material design
and manufacturing capability, product quality, cost, delivery and customer
service.

Major Customers

Core Materials currently has two major customers, Navistar and Yamaha.
The loss of a significant portion of sales to Navistar or Yamaha would have a
material adverse effect on the business of Core Materials.

RELATIONSHIP WITH NAVISTAR

Core Materials has assumed the long-standing relationship between
Columbus Plastics and Navistar's truck manufacturing division. As a condition to
the acquisition, Navistar and Core Materials entered into a Comprehensive Supply
Agreement. Pursuant to the terms of that agreement, Core Materials currently is
the sole supplier of Navistar's original equipment and service requirements for
fiberglass reinforced parts, using the SMC process, as those requirements
existed on the date of the agreement and were specified in the agreement, or as
those requirements may be modified or improved subject to the written approval
of Core Materials.

Navistar manufactures and markets medium- and heavy-duty trucks,
including school buses, mid-range diesel engines and service parts in North
America and in certain export markets. Navistar delivered 95,200 class 5 through
8 trucks, including school buses, in the United States and Canada during its
fiscal 1996, a 15% decrease from the 112,200 units delivered in 1995.
Navistar's combined share of the class 5 through 8 truck market was 27.5% in
1996 and 26.7% in 1995. Navistar has been the leader in combined market share
for class 5 through 8 trucks, including school buses, in the United States
and Canada in each of the last 16 years based on data obtained from the
American Automobile Manufacturer's Association, the United States Motor
Vehicle Manufacturer's Association and R.L. Polk & Company.

Core Materials makes products for Navistar's Chatham (Canada) assembly
plant and its Springfield, Ohio assembly and body plants. Core Materials
currently works closely on new


-5-
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product development with Navistar's engineering and research personnel at
Navistar's Fort Wayne, Indiana, Technical Center. Core Materials currently also
receives support from Navistar in the form of accounting, payroll, and human
resources management functions under a Transitional Services Agreement with
Navistar dated December 31, 1996.

Core Materials occupies the facility previously used by Columbus
Plastics. Navistar opened the facility in 1980 to fulfill Navistar's need for
higher quality fiberglass hoods. Until the addition of Yamaha personal
watercraft products in 1990, production sales growth at Columbus Plastics was
largely driven by Navistar's increased use of SMC material in its trucks. The
facility began production in late 1980, producing hoods for Navistar medium-duty
trucks. Beginning in 1986, air deflectors, air farings, fenders, splash panels,
engine covers and other components for Navistar trucks were added to the product
line.

The North American truck market in which Navistar competes is highly
competitive and the demand for trucks is subject to considerable volatility as
it moves in response to cycles in the overall business environment and is
particularly sensitive to the industrial sector, which generates a significant
portion of the freight tonnage hauled. Truck demand also depends on general
economic conditions, among other factors. Sales to Navistar amounted to
approximately 60%, 63%, and 74% of total revenues for the twelve month periods
ended December 31, 1996, October 31, 1995, and October 31, 1994, respectively.

RELATIONSHIP WITH YAMAHA

Core Materials also has assumed the long-standing relationship between
Columbus Plastics and Yamaha. Core Materials currently supplies a significant
amount of the SMC products for Yamaha's personal watercraft.

The addition of Yamaha's personal watercraft component business in 1990
represented Columbus Plastics' first major outside business undertaking.
Products produced for Yamaha included decks, hulls, engine hatches, bulk heads,
and reinforcements. Columbus Plastics had worked closely with Yamaha over the
six years prior to the asset purchase, to improve the surface quality of Yamaha
products and to identify new process control techniques and improved materials.

The diversification into a new market area that was not correlated to
truck demand allowed Columbus Plastics to fill in production gaps that would
have occurred during periods of lower demand for medium- and heavy-duty trucks.
Demand for products from Yamaha is related to the level of general economic
activity and specifically to the cyclical and seasonal nature of the personal
watercraft industry among other factors.

Sales to Yamaha amounted to approximately 38%, 34%, and 23% of total
revenues for the twelve month periods ended December 31, 1996, October 31, 1995,
and October 31, 1994, respectively.



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9

OTHER CUSTOMERS

Core Materials also provides limited secondary operations, such as
assembly of components and prime painting for customers other than Navistar and
Yamaha. In addition, Core Materials sells SMC material directly to third
parties, primarily other SMC molders.

Products

Core Materials incorporates a sophisticated computer program that
assists in the compounding of various complex SMC formulations tailored to
customer needs. The system provides for the following:

- Control information during various production processes; and
- Data for statistical batch controls

Core Materials has the capacity to manufacture approximately 45 million
pounds of SMC sheet material annually. Core Materials reached this production
capacity, in part, through the installation of an additional SMC compounding
machine in January 1997, which is expected to be brought on line in early April
1997. Production of SMC by Columbus Plastics for the twelve month periods ended
December 31, 1996, October 31, 1995, and October 31, 1994 was as follows:

<TABLE>
<CAPTION>

SMC Pounds
Produced
Year (Millions)
---- ----------

<S> <C>
1996 (December 31)................... 27
1995 (October 31).................... 31
1994 (October 31).................... 22
</TABLE>

Backlog

Core Materials relies on production schedules provided by Navistar and
Yamaha to plan and implement production. These schedules are provided on a
monthly basis and are considered firm for the current period. Navistar and
Yamaha can update these schedules daily for changes in demand that allows them
to run their inventories on a "just-in-time" basis. Accordingly, the ordered
backlog at Columbus Plastics was de minimis as of December 31, 1996 and 1995 and
as of October 31, 1995. In addition, sales to Navistar in 1997 will be highly
dependent on the rate at which new truck orders are received by Navistar.

Raw Materials

The principal raw materials used in the SMC compounding include:
polyester resin, fiberglass rovings and adhesives. Currently, there are at least
two suppliers for each of the raw


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materials used by Core Materials. The Company believes it currently has access
to an ample supply of these raw materials.

Capacity Constraints

Core Materials believes improvements in uptime performance offer the
best, and usually the most cost effective means of increasing existing
capacities and providing opportunities to pursue new business growth. Columbus
Plastics, on occasion in the past, was required to work a seven day/three shift
schedule to meet Navistar and Yamaha production requirements.

Working Capital Requirements

Core Materials, during its first three months of operation from January
1, 1997 to March 31, 1997, borrowed against its 7% FNMA guaranteed pass-through
certificate to meet short-term working capital requirements for production to
Navistar and Yamaha. The need for such borrowing arose from an initial waiting
period, contained in the Comprehensive Supply Agreement with Navistar, for
receipt of payment for shipments to Navistar. Core Materials anticipates, but
has not yet finalized negotiations for, a permanent revolving credit facility,
secured by accounts receivable and inventory to meet any working capital
requirements in the future.

Molding

Core Materials currently owns or leases 17 presses, ranging in size
from 500 to 4500 tons. Large presses provide the ability to manufacture very
large molded plastic parts. Core Materials believes that no other molder has
this number of large capacity presses.

Core Materials has both vacuum molding and in-mold coating capabilities
and currently operates eleven robots and two automatic guided vehicles that
assist in material handling, machining, and adhesive application.

Assembly and Paint

Core Materials has the ability to assemble and/or prime paint a wide
variety and volume of products. To enhance the surface quality and paint finish,
Columbus Plastics developed an in-mold coating capability. In-mold coating is a
manufacturing process performed by injecting a liquid over the molded part
surface and then applying pressure at elevated temperatures during an extended
molding cycle. The liquid coating serves to fill and/or bridge surface porosity
as well as provide a barrier against solvent penetration during subsequent
top-coating operations. Core Materials believes that it is among the industry
leaders in in-mold coating applications, based on the size and complexity of
parts coated and the number of presses, 13 of 17, that are in-mold coating
capable.



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Capital Expenditures and Research and Development

Capital expenditures totaled approximately $5.1 million, $7.3 million,
and $2.0 million for the twelve month periods ended December 31, 1996, October
31, 1995, and October 31, 1994, respectively. The increase in 1996 and 1995
from 1994 primarily relates to three large presses which were brought on line
in 1996 and a 24" SMC line in early 1997. Capital expenditures consist of
presses and other equipment to manufacture Navistar truck components and Yamaha
personal watercraft parts as well as laboratory equipment, storage equipment,
computers and office furniture and fixtures.

Product development is a continuous process at Core Materials. Research
and development activities focus on developing new SMC formulations and
improving existing products and manufacturing processes.

Core Materials does not maintain a separate research and development
facility but uses its production equipment (compounding machines, molding
presses, and primer system), as necessary, to support these efforts and
cooperates with Navistar and its resin supplier in its research and development
efforts. Likewise, manpower to direct and advance research and development is
integrated with the existing manufacturing, engineering, production, and quality
organizations. Management of Core Materials has estimated that internal costs
related to research and development activities approximate $200,000 per year.

Major research and development projects of current focus at Core
Materials include the following:

- Develop low pressure SMC applications to achieve lower initial
tooling costs and shorter lead times;

- Reduce the densities of SMC formulations to mold lighter
components without sacrificing physical or cosmetic properties;

- Use recycled SMC parts as filler to be environmentally proactive
and reduce waste cost;

- Complement current liquid in-mold-coating applications with
powder in-mold-coating development to expand the number of sealed
substrate surfaces on large-sized components; and

- Develop alternate primers for environmental, quality and cost
advantages.

Environmental Compliance

Core Materials' manufacturing operations are subject to federal, state
and local environmental laws and regulations which impose limitations on the
discharge of pollutants into the air and water and establish standards for the
treatment, storage and disposal of hazardous


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waste. The Company's policy is to conduct its business with due regard for the
preservation and protection of the environment. Core Materials' environmental
waste management involves the daily auditing of all satellite hazardous waste
accumulation points, weekly audits of all hazardous waste activities and
biennial audits of every authorized treatment, storage and disposal facility.
The Company's environmental staff also trains each new employee on waste
management and other environmental issues as part of an initial orientation
process, and annually thereafter.

Core Materials has submitted the information necessary for the granting
of a Title V permit, as required under the Clean Air Act. In 1989, Columbus
Plastics installed a Regenerative Thermal Oxidizer ("REECO"). The purpose of the
REECO system is to destroy volatile organic compounds from the coating
operation. The Company's current emission permits allow for 15 lbs./day of
volatile organic compound emission. The REECO system allows Core Materials to
meet these limitations by consistently achieving about 95% destruction
efficiency. Core Materials and Columbus Plastics have spent over $100,000 in the
past year to maintain the system, thus extending the reliability of the system
another 5 to 7 years. Core Materials believes that it is in compliance with the
Resource Conservation and Recovery Act of 1976 ("RCRA") and the Comprehensive
Environmental Response, Compensation, and Liability Act of 1980 ("CERCLA").
Compliance with these environmental laws and regulations has not had, nor is it
currently expected to have, a material effect on the Company's operations,
competitive position or capital expenditures through fiscal year 1997. The
amount of capital expenditures currently expected to be spent on environmental
compliance over the next two years is not significant.

Employees

As of December 31, 1996, Core Materials employed a total of 419
employees, 340 of whom are covered by a collective bargaining agreement with the
International Association of Machinists and Aerospace Workers ("IAM"). After a
15 day strike in August 1995, Columbus Plastics concluded a collective
bargaining agreement with the IAM covering the hourly employees ("Labor
Contract"). The Labor Contract expires in August of 1998 and provides for 3%
annual wage increases in August 1995, 1996 and 1997 with a reduction in benefit
costs, with this net increase being offset in part by a new two-tier wage system
for new hires. Core Materials assumed the Labor Contract, pursuant to an
Amendment, effective January 1, 1997.

Patents, Tradenames and Trademarks

Core Materials applies for and maintains patents, tradenames and
trademarks where it believes that such patents, tradenames and trademarks are
reasonably required to protect its rights in its products. Core Materials does
not believe that any single patent, tradename or trademark or related group of
such rights is materially important to its business or its ability to compete.

ITEM 2. PROPERTIES.

The materially important physical property of Core Materials consists
of a single plant that is situated approximately nine miles west of the center
of Columbus, Ohio, at 800 Manor Park


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Drive. The approximate 306,656 square-foot facility currently consists of
manufacturing, office and warehouse buildings on 28.2 acres of land.

The approximate 306,656 square feet of available floor space at Core
Materials is comprised of the following:

<TABLE>
<CAPTION>

Approximate
Square Feet
-----------

<S> <C>
Manufacturing.......................... 258,850
Office .............................. 23,223
Warehouse.............................. 24,583
-------------
306,656
</TABLE>

Core Materials produces SMC sheet material and molds fiberglass,
reinforced parts. Currently, Core Materials has SMC sheet production capacity
adequate for its production volume and there exist third parties from whom Core
Materials could purchase SMC sheet material. Core Materials has used and
maintained, in good operating condition, its plant and all of its equipment.
These facilities, through productive use, have adequate production capacity to
meet current production volume. The approximate capacity utilization for the
molding of production products was 84%, 122%, and 102% for the twelve month
periods ended December 31, 1996, October 31, 1995, and October 31, 1994. During
1996, the three new presses put into operation at Columbus Plastics have
increased the available capacity for the molding of production products.
Capacity utilization is measured on the basis of a six day, three-shifts per day
operation.

Core Materials acquired the property at 800 Manor Park Drive as a
result of the Asset Purchase Agreement between RYMAC and Navistar. The property
is subject to a first priority lien and security interest of Navistar under the
terms of the Secured Note.

ITEM 3. LEGAL PROCEEDINGS.

Core Materials is not currently a party to any material pending legal
proceedings, other than ordinary, routine litigation incidental to the business,
nor are any such proceedings known by management to be contemplated by
government authorities.

ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS.

On December 19, 1996, the stockholders of RYMAC held a special meeting
to consider and vote upon the Asset Purchase Agreement between RYMAC and
Navistar ("Proposal No. 1") and the Agreement and Plan of Merger between RYMAC
and Core Materials ("Proposal No. 2"). The shareholders voted to approve both
the Asset Purchase Agreement and the Agreement and Plan of Merger. The following
table shows the votes for and against, as well as the number of abstentions, on
each proposal:



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<TABLE>
<CAPTION>


Proposal No. 1
--------------
<S> <C>
Votes For.....................................3,986,673
Votes Against...................................338,754
Abstentions......................................51,816


Proposal No. 2
--------------

Votes For.....................................3,991,992
Votes Against...................................336,460
Abstentions......................................48,791
</TABLE>

The Asset Purchase Agreement provided for the acquisition by RYMAC of
substantially all of the assets of the Columbus Plastics operating unit of
Navistar. As consideration, Navistar received the Secured Note in the principal
amount of $25,504,000. Navistar also received 4,264,000 shares of newly issued
common stock of Core Materials. The principal amount of the Secured Note and the
number of shares of common stock received by Navistar were subject to adjustment
pursuant to the terms of the Asset Purchase Agreement. Effective December 31,
1996, the amount of the Secured Note was increased to $29,514,000 in order to
reflect an increase in the "net tangible assets" of Columbus Plastics as of the
December 31, 1996 acquisition date. In addition, Navistar will receive future
consideration in the form of an increase in the principal amount of the Secured
Note if Core Materials achieves earnings results above specified levels during
1997 through 1999.

The Agreement and Plan of Merger provided for the merger of RYMAC with
and into its wholly owned subsidiary, Core Materials. Core Materials continued
as the surviving corporation of the merger under the laws of the State of
Delaware. RYMAC, by contrast, ceased to exist as a separate corporate entity.
The merger was accomplished by a conversion of each issued and outstanding share
of common stock in RYMAC into the right to receive one fully paid share of
common stock in Core Materials.


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PART II

ITEM 5. MARKET FOR REGISTRANT'S COMMON EQUITY AND RELATED STOCKHOLDER MATTERS.

The Company's common stock is traded on the American Stock Exchange
under the symbol "CME" and began trading on January 2, 1997. The common stock of
the Company's former parent, RYMAC, was traded on the American Stock Exchange
under the symbol "RM" until December 31, 1996.

The table below sets forth the high and low sale prices of RYMAC common
stock for each full quarterly period within the two most recent fiscal years for
which such stock was traded, as reported on the American Stock Exchange
Composite Tape, and certain dividend information with respect to such shares and
the same information for Core Materials common stock for the January 2, 1997 to
March 27, 1997 period. RYMAC share price information is presented on a
calendar quarter basis. Following the acquisition and merger, Core Materials
assumed the business previously conducted by Columbus Plastics, rather than the
business previously conducted by RYMAC. The historical prices for RYMAC common
stock, therefore, are not indicative of Core Materials' potential future
performance.

<TABLE>
<CAPTION>

Per Share
Dividends
Paid or
High Low Declared
---- --- --------

CORE MATERIALS CORPORATION
--------------------------

<S> <C> <C> <C> <C>
Period 1/2/97 to 3/27/97 3 5/8 2 5/16 $0.00


RYMAC MORTGAGE INVESTMENT CORPORATION
-------------------------------------
First Quarter 1996 1 7/16 1 $0.00
Second Quarter 1996 2 7/8 1 1/8 0.00
Third Quarter 1996 2 5/8 1 1/2 0.00
Fourth Quarter 1996 2 1/2 1 7/8 0.00

First Quarter 1995 1 5/16 15/16 $0.00
Second Quarter 1995 1 3/4 1 0.00
Third Quarter 1995 1 3/4 1 1/16 0.003(1)
Fourth Quarter 1995 1 7/16 1 0.00
(1)Three tenths of one cent.
</TABLE>

The Company's common stock was held by 666 holders of record on March
26, 1997.


-13-
16


Core Materials is a new entity and has never paid any cash dividends on
its common stock. Core Materials currently expects that its earnings will be
retained to finance the growth and development of its business and does not
anticipate paying dividends on its common stock in the foreseeable future.

Moreover, Core Materials is restricted by covenants contained in the
Secured Note due Navistar. Pursuant to the terms of the Secured Note, Core
Materials has agreed that, so long as any amount is owing to Navistar, it will
not, and will not permit any of its subsidiaries to, directly or indirectly,
declare or pay any dividend (other than dividends payable solely in common
stock or preferred stock of Core Materials and dividends payable by any
subsidiary of Core Materials to Core Materials, or any other subsidiary of Core
Materials) on, or make any payment on account of, or set apart assets for a
sinking or other analogous fund for, the purchase, redemption, defeasance,
retirement or other acquisition of, any shares of any class of capital stock of
Core Materials or any warrants or options to purchase any such capital stock,
whether now or hereafter outstanding, or make any other distribution in respect
thereof, either directly or indirectly, whether in cash or property or in
obligations of Core Materials or any subsidiary.

Unregistered Securities

On February 19, 1997, Core Materials issued, in total, 40,200 shares of
common stock, par value $.01 per share, to approximately 402 employees (which
constituted all of its employees with the exception of certain executive
employees.(3)) The Company received no consideration for the shares. The shares
were issued as an incentive for its employees to remain with the Company and are
subject to forfeiture to the Company if an employee leaves prior to December 31,
1998. During this period, the shares may not be transferred.


ITEM 6. SELECTED FINANCIAL DATA.

The following selected financial data as of December 31, 1996 and 1995
and as of October 31, 1995 and for the year ended December 31, 1996, the
two-month period ended December 31, 1995 and for each of the three years in the
period ended October 31, 1995 are derived from the audited financial statements
of Core Materials and Columbus Plastics. The capital structure of Core Materials
differs significantly from the capital structure of Columbus Plastics prior to
its acquisition by RYMAC. The information set forth below should be read in
conjunction with "Management's Discussion and Analysis of Results of Operations
and Financial Condition" and the financial statements and related notes included
elsewhere herein including, the unaudited combined pro forma financial
information.


- ----------
(3) Specifically, Richard R. Conte (Acting Chief Financial Officer), Kenneth M.
Schmell (Acting Chief Executive Officer), and Gerald L. Voirol (Controller and
Assistant Secretary) did not receive any of the common shares issued on February
19. In addition, at least one employee decided not to accept the shares.

-14-
17

<TABLE>
<CAPTION>




Year Ended Two Months For the Year Ended October 31,
December 31, Ended Decem- ------------------------------
1996 ber 31, 1995 1995 1994 1993
-------------------- -------------------- -------- -------- -------
(In thousands)
INCOME STATEMENT DATA:
<S> <C> <C> <C> <C> <C>
Revenues(1) $52,467 $ 8,855 $59,505 $44,191 $39,767
Direct costs and expenses:
Cost of sales 50,734 8,082 53,319 40,487 38,393
Postretirement benefits expense 1,043 151 857 833 934
Marketing and administrative expense 493 81 484 390 369
Other-net (350) (3) 55 15 4
------- ------- ------- ------- -------
Income before interest and taxes(2) $ 547 $ 544 $ 4,790 $ 2,466 $ 67
------- ------- ------- ------- -------

BALANCE SHEET DATA (AT END OF PERIOD)
Accounts receivable $ 2,008 $ 7,298 $ 7,233 $ 1,238
Inventory 3,343 3,512 3,362 3,019
Net property, plant and equipment 25,068 21,939 21,652 15,734
Deferred tax asset-net 12,455 -- -- --
Total assets 47,104 33,305 32,591 20,281
Accounts payable and accrued expenses 1,795 9,099 12,451 5,791
Secured note payable 29,514 -- -- --
Navistar's equity investment -- 24,206 20,140 14,489
Stockholders' equity 15,551 -- -- --

<FN>
(1) Core Materials provided Navistar's truck assembly operations with all
of its sheet molding composite plastic component requirements, which
represented greater than 60% of its output in all periods presented, at
standard cost, with the remainder sold to unrelated third party
customers at negotiated prices.

(2) Interest, income taxes and earnings per share have been omitted because
Core Materials was not a separate stand alone division or subsidiary of
Navistar and generally was not accounted for separately prior to the
Acquisition. In addition, Navistar's systems and procedures do not
provide sufficient information to develop a reasonable cost allocation
of income taxes, corporate debt and interest expense.
</TABLE>

ITEM 7. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS OF CORE MATERIALS

Certain statements under this caption constitute "forward-looking
statements" which involve certain risks and uncertainties. Core Materials'
actual results may differ significantly from those discussed in the
forward-looking statements. Factors that may cause such a difference include,
but are not limited to, those discussed in this section under the captions
"Liquidity and Capital Resources" and "Business Outlook".

OVERVIEW

On December 31, 1996, Core Materials acquired all of the assets and
assumed certain liabilities of Columbus Plastics, a wholly owned operating unit
of Navistar's truck manufacturing division since its formation in late 1980.
Based on the terms of the acquisition, the transaction for financial reporting
and accounting purposes has been accounted for as a reverse acquisition whereby
Columbus Plastics is deemed to have acquired Core Materials. However, Core
Materials


-15-
18
is the continuing legal entity. Accordingly, references to the
operating results of Core Materials refer to the historical operations of
Columbus Plastics.

Core Materials manufactures high quality compression SMC fiberglass
reinforced parts. Core Materials has two major customers, Navistar and Yamaha.
The demand for Core materials products is affected by the volume of purchases
from these two customers, whose orders are primarily affected by economic
conditions in the United States and Canada. Core Materials' manufacturing
operations have a significant fixed cost component. Accordingly, during
periods of changing demands, the profitability of Core Materials' operations
will change proportionately more than revenues from operations.

Pursuant to the Asset Purchase Agreement, Navistar and Core Materials
entered into a Comprehensive Supply Agreement with an initial term of five
years. Under the terms of the Comprehensive Supply Agreement, Navistar agreed
to purchase from Core Materials, and Core Materials agreed to sell to Navistar
at negotiated prices, which approximate fair value, all of Navistar's original
equipment and service requirements for fiberglass reinforced parts using the SMC
process for components currently being manufactured by Core Materials and
detailed in the Comprehensive Supply Agreement. The historical sales and
gross margin amounts have been adjusted to reflect the Comprehensive Supply
Agreement.

Prior to January 1, 1997, Core Materials had not been a stand alone
operating entity. As such, Navistar had provided substantial management
support in the form of treasury, legal, tax, information systems and other
similar corporate support functions. Corporate general and administrative
expenses have not been previously allocated to Core Materials. For purposes of
preparing the financial statements of Core Materials included in this Form
10-K, these corporate costs have been allocated using a method management
believes to be reasonable and reflective of those costs had they been incurred
as a stand alone entity. However, Navistar's systems and procedures did not
provide the ability to reasonably allocate costs for income taxes, debt and
interest expense. Additionally, sales to Navistar were recorded as revenues at
Core Materials' standard cost. Accordingly, the results of operations
reflected in the financial statements and as discussed below may not be
indicative of the results of operations of Core Materials had it been a stand
alone company during the periods presented.

Results of Operations

The pro forma amounts are shown in parentheses next to the historical
amounts.

CALENDAR YEAR 1996 COMPARED WITH FISCAL YEAR 1995

Net sales for 1996 totaled $52.5 million ($56.8 million) down 12%
(13%) from the $59.5 million ($65.6 million) in 1995. Shipments to Navistar
decreased 16% (18%) to $31.5 million ($35.7 million) from $37.8 million ($43.6
million) in 1995. The decrease in shipments to Navistar was the direct result
of a decrease in sales of Navistar trucks resulting from a decline in demand
for trucks in the United States and Canada. Sales to Yamaha decreased in 1996
by 2% to $19.8 million compared with the $20.2 million in 1995. This decrease
was the result of a slight decrease in demand for Yamaha's watercraft products.


-16-
19

Gross margin was 3% (11%) of sales in 1996 compared with 10% (19%) in
1995. The decrease in gross margin was primarily the result of the decrease in
sales volume which resulted in lower capacity utilization and overhead
absorption. Manufacturing costs in 1996 were higher than in 1995 due to
increased depreciation expense resulting from the installation of three large
SMC presses that became operational in 1996. In addition, the 1996 gross
margin was adversely impacted by start up costs related to the tooling for a
new Yamaha model, increased labor costs resulting from the three year labor
agreement with hourly employees signed in August, 1995 and increased repair and
maintenance costs relating to projects that had been deferred during 1995 due
to the record production volumes experienced in that year.

Marketing and administrative expenses at $493,000 in 1996 were
essentially the same as in 1995. Allocated postretirement benefits expense
increased from 1995 due to higher service costs resulting from increased
employment levels and increased multi-employer plan contributions. Other
income in 1996 resulted from the close-out of a special tooling project for one
customer.

FISCAL YEAR 1995 COMPARED WITH FISCAL YEAR 1994

Net sales for 1995 totaled $59.5 million ($65.6 million) up 35% (33%)
over the $44.2 million ($49.2 million) in 1994. Shipments to Navistar
increased 16% (16%) to $37.8 million ($43.6 million) from the $32.5 million
($37.6 million) in 1994. The increase in shipments to Navistar was the result
of an increase in sales of Navistar trucks due to an increase in truck industry
demand in the United States and Canada. Sales to Yamaha in 1995 increased by
95% to $20.2 million compared with the $10.4 million in 1994. This increase
resulted from an increase in demand for Yamaha's watercraft products and
improved pricing.

Gross margin was 10% (19%) of sales in 1995 compared with 8% (18%) in
1994. The increase in gross margin was primarily the result of the increase in
sales volumes, improved pricing, capacity utilization and operating efficiency.
These improvements were partially offset by higher labor and overtime costs to
meet the demand for both Navistar and Yamaha products. Gross margin in 1995
was also adversely impacted by a 15 day strike by Columbus Plastics' hourly
workers during the fiscal fourth quarter.

Marketing and administrative expenses were $484,000 in 1995 compared
with $390,000 in 1994. The increase was primarily the result of the hiring of
new employees and increased support costs to meet the increased production
demand in 1995. Allocated postretirement benefits expense was essentially the
same as the prior year.


-17-
20

LIQUIDITY AND CAPITAL RESOURCES

Historically, Core Materials' working capital and investment needs have
been financed by Navistar through the intercompany equity investment account and
through the sale of products to Yamaha. Subsequent to the Closing, Core
Materials has independently funded all of its working capital and investment
capital requirements. Funds necessary to meet its working capital and
investment needs are currently being financed through the following sources: 1)
the Comprehensive Supply Agreement between Navistar and Core Materials, while in
effect, requires that Navistar obtain all of its SMC plastic requirements for
components currently being manufactured by Core Materials, as detailed in the
Comprehensive Supply Agreement, from Core Materials at negotiated prices which
approximate fair value; 2) the Company has substantial net operating losses
("NOLs") that will be available to offset future taxable income of Core
Materials (the utilization of these NOLs will substantially reduce any federal
income tax liability payments); and 3) Core Materials is currently negotiating
to obtain a permanent working capital line of credit from a commercial bank
which will be available to fund Core Materials' working capital requirements.
In January 1997, management concluded a $3 million temporary working capital
facility with a commercial bank utilizing the mortgage-backed security as
collateral for borrowings under the facility. Internally generated funds
together with proceeds from the use of this temporary working capital facility
have provided sufficient operating liquidity for Core Materials. The
Comprehensive Supply Agreement with Navistar provides for payment terms for
shipments to Navistar which are customary in the SMC manufacturing industry.
Core Materials has been receiving regular payments on its receivables from
Navistar after an initial period prescribed by the Comprehensive Supply
Agreement.

Based upon 1) the terms of its sales arrangements with its customers,
particularly Navistar and Yamaha, 2) forecasted cash flows from operations and
3) utilization of NOLs, management believes that internally generated funds
from operations will be sufficient to fund working capital and investment
capital requirements. The securing of the temporary, and subsequently, a
permanent working capital facility will provide liquidity in periods of
fluctuating sales activity and in instances of production slowdowns.

Management is also negotiating a term loan facility(ies) which will be
supported by Core Materials' machinery, equipment and real estate. Funding
from such term loan(s) will be utilized to reduce the Navistar Secured Note
Payable (Navistar's remaining note balance will likely become subordinate in
regard to both collateral and repayment to any term financing concluded).

INCOME TAXES

The balance sheet at December 31, 1996 includes a deferred tax asset
of $12,455,000, net of a valuation allowance of $6,838,000. The deferred tax
assets are net of a valuation allowance since it is more likely than not that
a portion of the deferred tax asset may not be realized in the future.

The deferred tax asset includes the tax benefits associated with
cumulative net operating and capital tax losses of approximately $41.9 million
and temporary differences between the book and tax basis of Core Materials'
property and equipment. The valuation allowance at December


-18-
21
31, 1996 assumes that it is more likely than not that approximately $10.3
million of the cumulative net operating losses and all (approximately $9.8
million) of the cumulative capital tax losses will not be realized before their
expiration date. Realization of the net deferred tax asset is dependent on the
generation of approximately $27.0 million of future taxable income, of which an
average of approximately $1.8 million would need to be generated annually for
the next 15 year period 1997 through 2011.

Extensive analysis is performed to determine the amount of the
deferred tax asset. Such analysis is based upon the premise that Core
Materials is and will continue to be a going concern and that it is more likely
than not that deferred tax benefits will be realized through the generation of
future taxable income. Management reviews all available evidence, both
positive and negative, to assess the long-term earnings potential of Core
Materials using a number of alternatives to evaluate financial results in
economic cycles at various industry volume conditions. Other factors considered
are the company's long standing relationship with its two largest customers -
Navistar and Yamaha, the Comprehensive Supply Agreement between Core Materials
and Navistar, and Navistar's 16-consecutive-year leadership in the combined
market share of Class 5 through 8 trucks. The projected availability of
taxable income to realize the tax benefits from net operating loss
carryforwards and the reversal of temporary differences before expiration of
these benefits are also considered. Management believes that, with the
combination of available tax planning strategies, the maintenance of its
relationships with Yamaha and Navistar and Navistar's maintenance of
significant market share, earnings are achievable in order to realize the net
deferred tax asset of $12,455,000.

BUSINESS OUTLOOK

After experiencing significant order declines during 1996 from both
its major customers, Navistar and Yamaha, order rates for both these customers
have increased in early 1997 to levels above the low points of 1996 order
rates. However, Navistar's management forecasts that industry demand for the
medium- and heavy-duty trucks that contain Core Materials' products will be
lower in 1997 compared to 1996. Additionally, since the Acquisition, Core
Materials has responded to and initiated discussions on a number of new sales
opportunities with customers representing product diversification opportunities
and with trucking industry related entities. Although there can be no
assurance that these opportunities will result in incremental sales volumes,
Management is encouraged by both the number and diversity of the opportunities
it is currently discussing since Core Materials became a stand alone, publicly
owned company.


-19-
22



ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA.


INDEPENDENT AUDITORS' REPORT


Core Materials Corporation
Columbus, Ohio

We have audited the accompanying balance sheets of Core Materials Corporation
(the "Company") as of December 31, 1996 and 1995 and as of October 31, 1995 and
the related statements of revenues, direct expenses and identified corporate
expenses before interest and taxes for the year ended December 31, 1996, the
two month period ended December 31, 1995 and each of the two years in the period
ended October 31, 1995. These financial statements are the responsibility of the
Company's management. Our responsibility is to express an opinion on these
financial statements based on our audits.

We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free of material
misstatement. An audit includes examining, on a test basis, evidence supporting
the amounts and disclosures in the financial statements. An audit also includes
assessing the accounting principles used and significant estimates made by
management, as well as evaluating the overall financial statement presentation.
We believe that our audits provide a reasonable basis for our opinion.

As explained in Note 2, the Company's historical operating results are not
necessarily indicative of those which may have resulted had it been a stand
alone company.

In our opinion, such financial statements present fairly, in all material
respects, the financial position of Core Materials Corporation as of December
31, 1996 and 1995 and as of October 31, 1995 and the results of its direct
operations and identified corporate expenses before interest and taxes for the
year ended December 31, 1996, the two month period ended December 31, 1995 and
each of the two years in the period ended October 31, 1995 in conformity with
generally accepted accounting principles.


DELOITTE & TOUCHE LLP
Chicago, Illinois
March 21, 1997


-20-
23


CORE MATERIALS CORPORATION
BALANCE SHEETS
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>

DECEMBER 31, DECEMBER 31, OCTOBER 31,
1996 1995 1995
<S> <C> <C> <C>
ASSETS
CURRENT ASSETS:
Cash $ 590,212 $ 33,064 $ 11,929
Mortgage-backed security investment 3,295,049
Accounts receivable 2,007,963 7,297,866 7,232,646
Inventories:
Work in process 1,585,644 2,245,017 1,912,227
Stores 1,757,055 1,266,809 1,450,123
------------ ----------- -----------
3,342,699 3,511,826 3,362,350
Other current assets 344,440 523,146 332,079
------------ ----------- -----------
Total current assets 9,580,363 11,365,902 10,939,004

PROPERTY, PLANT AND
EQUIPMENT - Net 25,068,481 21,939,271 21,652,220
DEFERRED TAX ASSET - Net 12,455,000
------------ ----------- -----------
TOTAL $ 47,103,844 $33,305,173 $32,591,224
============ =========== ===========

LIABILITIES AND STOCKHOLDERS' EQUITY

LIABILITIES:
CURRENT LIABILITIES:
Accounts payable $ 372,869 $ 7,665,258 $11,235,036
Accrued liabilities 1,422,103 1,433,507 1,215,742
------------ ----------- -----------
Total current liabilities 1,794,972 9,098,765 12,450,778

SECURED NOTE PAYABLE 29,514,000
POSTRETIREMENT BENEFITS LIABILITY 244,000


STOCKHOLDERS' EQUITY:

Common stock, $0.01 par value, authorized
20,000,000 shares; issued and outstanding
9,474,600 shares 94,746
Paid-in-capital 15,918,193
Retained deficit (462,067)
NAVISTAR'S EQUITY INVESTMENT ACCOUNT
------------ ----------- -----------
Total stockholders' equity 15,550,872 24,206,408 20,140,446
------------ ----------- -----------
TOTAL $ 47,103,844 $33,305,173 $32,591,224
============ =========== ===========
</TABLE>


See notes to the financial statements
-21-
24



CORE MATERIALS CORPORATION

STATEMENTS OF REVENUES, DIRECT EXPENSES AND IDENTIFIED
CORPORATE EXPENSES BEFORE INTEREST AND TAXES
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>

TWO
YEAR ENDED MONTHS ENDED YEARS ENDED OCTOBER 31,
DECEMBER 31, DECEMBER 31, ------------------------------
1996 1995 1995 1994

<S> <C> <C> <C> <C>
NET SALES:
Navistar $ 31,546,315 $ 5,334,994 $37,777,164 $32,541,121
Yamaha 19,759,033 3,216,025 20,221,722 10,381,686
Other 1,161,461 303,633 1,506,243 1,268,645
------------ ------------ ----------- -----------

52,466,809 8,854,652 59,505,129 44,191,452

COSTS AND EXPENSES:
Cost of sales 50,733,573 8,082,169 53,319,218 40,487,461
Postretirement
benefits expense 1,042,794 151,108 857,098 832,590
Marketing and administrative 493,000 81,000 484,000 390,000
Other (income) expense (349,604) (3,250) 55,241 15,278
------------ ------------ ----------- -----------

INCOME BEFORE
INTEREST AND TAXES $ 547,046 $ 543,625 $ 4,789,572 $ 2,466,123
============ ============ =========== ===========
</TABLE>


See notes to financial statements.


-22-
25



CORE MATERIALS CORPORATION


NOTES TO FINANCIAL STATEMENTS
- --------------------------------------------------------------------------------


1. BUSINESS FORMATION AND NATURE OF OPERATIONS

Core Materials Corporation ("Core Materials"), a Delaware corporation, was
formed on October 8, 1996 by RYMAC Mortgage Investment Company ("RYMAC"),
a Maryland corporation, as a wholly owned subsidiary, for the purpose of
acquiring substantially all of the assets and liabilities of Columbus
Plastics Operation ("Columbus Plastics"), an operating unit of Navistar
International Transportation Corp. ("Navistar"). Throughout these Notes to
Financial Statements, references to Columbus Plastics refers to the
operations of Core Materials prior to the acquisition.

Prior to 1994, RYMAC was primarily engaged in making investments in
mortgage derivative securities and, to a lesser extent, mortgage related
investments. In mid-1994, RYMAC's Board of Directors decided not to pursue
its historical line of business and would investigate alternative
opportunities to maximize stockholder value, which led to the acquisition
of Columbus Plastics.

On December 31, 1996, RYMAC merged into its wholly owned subsidiary, Core
Materials, by converting each outstanding common share of RYMAC into the
right to receive one common share of Core Materials, with Core Materials
as the surviving corporation and continuing registrant. Simultaneously, on
December 31, 1996, Core Materials purchased substantially all of the
assets and assumed certain liabilities of Columbus Plastics for (1)
$29,514,000, in the form of a secured promissory note due to Navistar
("Secured Note") and (2) 4,264,000 shares of Core Materials common stock,
representing approximately 45% of the total number of shares of Core
Materials common stock then issued and outstanding (see Note 4) (the
"Acquisition").

Based upon the terms of the Acquisition, the transaction for financial
reporting and accounting purposes has been accounted for as a reverse
acquisition whereby Columbus Plastics is deemed to have acquired Core
Materials. However, Core Materials is the continuing legal entity and
registrant for both Securities and Exchange Commission filing purposes and
income tax reporting purposes. Consistent with reverse acquisition
accounting treatment Core Materials has carried forward the historical
basis of the acquired assets and assumed liabilities of Columbus Plastics
and has revalued the basis of its net assets to fair value at December 31,
1996.

Core Materials produces compression Sheet Molding Composite ("SMC")
fiberglass reinforced parts. Core Materials has two principal customers,
Navistar and Yamaha, and provides Navistar's truck assembly operations
with generally all of its SMC requirements, primarily hoods and air
deflector shields.


-23-
26

2. BASIS OF PRESENTATION

The fiscal year end of Core Materials Corporation is December 31. Columbus
Plastics' historical year end was October 31. In the accompanying
financial statements, the historical fiscal year of Columbus Plastics has
been maintained through October 31, 1995, its previous most recently
audited financial statements. Effective December 31, 1995, the fiscal year
end was changed to conform to the year end of Core Materials, the
continuing legal entity and registrant.

The accompanying balance sheet as of December 31, 1996 reflects the
Acquisition accounted for as a reverse acquisition. All other accompanying
financial statements reflect the historical assets, liabilities and
operations of Columbus Plastics. Note 5 contains the unaudited pro forma
combined statements of income of Core Materials for the twelve months
ended December 31, 1996 and the twelve months ended October 31, 1995, as
if the Acquisition had been consummated as of November 1, 1994.

Prior to the Acquisition, Columbus Plastics was not a "stand alone"
division or subsidiary of Navistar and was not generally accounted for
separately. As a result, the distinct and separate accounts necessary to
present individual Core Materials balance sheets as of December 31, 1995
and October 31, 1995 and income statements for the year ended December
31, 1996, the two month period ended December 31, 1995 and each of the
two years in the period ended October 31, 1995 have not been maintained.

Columbus Plastics did not maintain corporate treasury, legal, tax,
purchasing and other similar corporate support functions. Corporate
general and administrative expenses have not been previously allocated to
Columbus Plastics. For purposes of preparing the Core Materials financial
statements, certain of these corporate costs, along with other Navistar
Truck Group expenses, were allocated using an allocation method (see Note
14). However, Navistar's systems and procedures do not provide sufficient
information to develop a reasonable cost allocation for income taxes,
corporate debt and interest expense.

With respect to cash flows; purchases of inventory, payroll, capital and
other expenditures were funded through the Equity Investment account with
Navistar. Accounts payable to third party vendors and certain expense
accruals were processed and recorded at other Navistar locations.
Remittances from sales to third parties were collected by Navistar and
were accounted for through the Equity Investment account as were sales to
Navistar's truck assembly operations. Accordingly, Columbus Plastics has
no operating cash flows.

FINANCIAL STATEMENT PRESENTATION - Based upon the above information, the
following financial information is presented:

- Balance Sheets - The assets and liabilities of Columbus Plastics
are included herein at Navistar's historical cost. The net assets
of Core Materials have been revalued to their fair value at
December 31, 1996.

-24-
27

- Statements of Revenues, Direct Expenses and Identified Corporate
Expenses before Interest and Taxes-Includes all Navistar corporate
cost allocations for which a reasonable method of allocating the
costs to the operations of Columbus Plastics can be developed.

- Statements of Cash Flows are not presented as Columbus Plastics has
essentially no cash flow. Note 8 to the financial statements
presents a reconciliation of the Navistar Equity Investment account
for all periods presented.

3. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

USE OF ESTIMATES - The preparation of financial statements in conformity
with generally accepted accounting principles requires management to make
estimates and assumptions that affect the reported amounts of assets and
liabilities, disclosure of contingent assets and liabilities and reported
amounts of revenues and expenses during the reporting period. Actual
results could differ from those estimates.

REVENUE RECOGNITION - During the periods presented, Core Materials
recorded sales to Navistar's manufacturing plants at its standard cost
at date of shipment. Effective December 31, 1996, sales to Navistar will
be recorded at the prices stipulated in the Comprehensive Supply
Agreement between Core Materials and Navistar (the "Supply Agreement")
(see Note 15), which approximate fair value. Sales to third party
customers, other than Navistar, are recorded at negotiated prices at
date of shipment.

MORTGAGE-BACKED SECURITY - Pursuant to reverse acquisition accounting, the
mortgage-backed security is recorded at its fair value at December 31,
1996, which is also the cost basis to Core Materials. The security, which
matures in November 2025, is considered held to maturity, and is carried
at the lower of its cost or market value. Core Materials has the intent
and ability to hold this security to maturity.

INVENTORIES - Inventories are stated at the lower of cost (standard cost)
or market.

PROPERTY, PLANT AND EQUIPMENT - Property, plant and equipment are recorded
at cost. Depreciation is provided on a straight line method over the
estimated useful lives of the assets. The carrying amount of long-lived
assets is evaluated annually to determine if adjustment to the
depreciation period or to the unamortized balance is warranted. Such
evaluation is based principally on the expected utilization of the
long-lived assets.

Ranges of estimated useful lives for computing depreciation are as
follows:

Land improvements 20 years
Building and improvements 20-50 years
Machinery and equipment 3-25 years
Tools, dies and patterns 3-5 years

-25-
28


FAIR VALUE OF FINANCIAL INSTRUMENTS - Core Materials' financial
instruments consist of a mortgage-backed security investment, accounts
receivable, accounts payable and a secured note payable. The carrying
amounts of the financial instruments approximate their fair value.

EARNINGS PER SHARE - Earnings per share is not presented as Columbus
Plastics was not a stand alone division or subsidiary of Navistar and was
generally not accounted for separately during the periods presented.

4. ACQUISITION

On December 31, 1996 Core Materials acquired substantially all of the
assets and assumed certain liabilities of Columbus Plastics for (1) a
$25,504,000 Secured Note due Navistar, subject to adjustment, and (2)
4,264,000 shares of Core Materials common stock, representing
approximately 45% of the total number of shares of Core Materials common
stock then issued and outstanding.

Effective December 31, 1996, the Secured Note was increased to
$29,514,000 in order to reflect an increase in the "net tangible assets"
(as defined in the Asset Purchase Agreement between RYMAC and Navistar
(the "Agreement")) of Columbus Plastics as of December 31, 1996.

In connection with the Acquisition, Core Materials is required to pay
Navistar future consideration in the form of an increase in the Secured
Note based upon a multiple of the amount by which Core Materials' earnings
before interest and taxes (EBIT) exceeds established thresholds over the
three year period 1997 to 1999. The future consideration received will be
based upon a multiple of EBIT as follows:

- 1997: If EBIT exceeds $6,512,000, then the future
consideration will be the excess multiplied by 5.55.

- 1998: If EBIT exceeds $6,512,000, then the future
consideration will be the product of the 1998 excess EBIT less
the 1997 excess EBIT multiplied by 4.50.

- 1999: If EBIT exceeds $6,512,000, then the future
consideration will be the product of the 1999 excess EBIT less
the 1998 excess EBIT multiplied by 2.75.

The maximum increase in the Secured Note as a result of future
consideration is limited to $24,496,000. Such increases will be accounted
for by reducing Core Materials' retained earnings and will increase the
amount of the balloon payment due in November 2006.

Based upon the terms of the Acquisition, the transaction for financial
reporting and accounting purposes has been accounted for as a reverse
acquisition whereby Columbus Plastics is deemed to have acquired Core
Materials. However, Core Materials is the continuing legal entity and
registrant for both Securities and Exchange Commission filing purposes and
income tax reporting purposes. Consistent with reverse acquisition
accounting


-26-
29



treatment Core Materials has carried forward the historical basis of the
acquired assets and assumed liabilities of Columbus Plastics and has
revalued the basis of its net assets to fair value at December 31, 1996.

Consistent with reverse acquisition accounting treatment, the purchase
price should be determined as the fair value of the consideration paid or
received whichever is more clearly evident. Because RYMAC's stock was
thinly traded and supported a company with no operations (prior to the
Acquisition), the fair value of RYMAC's then outstanding common stock was
not appropriate to determine the Acquisition purchase price. Instead the
purchase price was determined based upon the fair value of the
consideration received (Core Materials' assets and liabilities) by
Columbus Plastics. The purchase price was approximately $16.0 million,
calculated as follows, and excludes any future consideration which would
be paid if certain earnings thresholds are met:

<TABLE>
<CAPTION>

<S> <C>
Cash $ 584,351
Mortgage-backed security 3,295,049
Other assets 122,935
Deferred tax asset, net 12,455,000
Accrued expenses (492,649)
-----------
$15,964,686
</TABLE>

Transaction costs incurred by the acquiror in connection with the
acquisition of a company without operating substance should be treated
similar to that of an offering of equity securities as a reduction of
paid-in capital. Since the recording of Navistar's transaction costs at
Core Materials would result in no net impact to Core Materials' balance
sheet, Navistar's transaction costs are excluded from the purchase price.

The Agreement identified the specific assets to be acquired and the
specific liabilities to be assumed. The decrease in accounts payable at
December 31, 1996 versus the prior periods as shown in the accompanying
balance sheets reflects the retention by Navistar of certain accounts
payable at closing in accordance with the Agreement.

5. PRO FORMA COMBINED FINANCIAL INFORMATION (UNAUDITED)

The following unaudited pro forma combined statements of income for the
twelve month periods ended December 31, 1996 and October 31, 1995 are
presented as if the Acquisition had occurred as of November 1, 1994. This
pro forma information is not necessarily indicative of the actual results
of operations which would have occurred had the transactions occurred on
such dates or which may occur in the future.


-27-
30



CORE MATERIALS CORPORATION
UNAUDITED PROFORMA COMBINED STATEMENT OF INCOME
Twelve months ended December 31, 1996

<TABLE>
<CAPTION>
Proforma Adjustments
-------------------------------------------
Historical Supply & Proforma
Columbus Services Adjusted
Plastics Acquisition Note Agreements Note Balance Note
---------- ----------- ---- ---------- ---- --------- ----
<S> <C> <C> <C> <C> <C> <C> <C>
Net Revenues:
Navistar $31,548,315 $ 4,123,000 (b) $ 35,669,315
Yamaha 19,759,033 19,759,033
Other-manufacturing 1,161,461 1,161,461
Investment income $ 230,650 (a) 230,650
----------- ----------- ------------ ------------
52,466,809 230,650 4,123,000 56,820,459

Cost of sales 50,733,573 50,733,573
----------- ----------- ------------ ------------
Gross Margin 1,733,236 230,650 4,123,000 6,086,886

Postretirement benefits expense 1,042,794 1,042,794
Marketing and administrative 493,000 864,000 (d) - (d) 1,357,000
Interest expense - net 1,841,120 (c) 1,841,120
Other (income) (349,604) (349,604)
----------- ----------- ------------ ------------
Income Before Income Taxes $ 547,046 $(2,474,470) $ 4,123,000 $ 2,195,576

Income Tax Provision 905,895 (f)
------------
Net income $ 1,289,681
============
Net Income Per Common Share $ 0.13
============
Weighted Average Number of
Common Shares and Common
Stock Equivalents 9,654,400 (e)
============
</TABLE>

-28-
31


CORE MATERIALS CORPORATION
UNAUDITIED PROFORMA COMBINED STATEMENT OF INCOME
Twelve months Ended October 31, 1995

<TABLE>
<CAPTION>

Proforma Adjustments
--------------------------------------------------

Historical Supply & Proforma
Columbus Services Adjusted
Plastics Acquisition Note Agreements Note Balance Note
-------- ----------- ---- ---------- ---- ------- ----


<S> <C> <C> <C> <C> <C> <C> <C>
Net Revenues:
Navistar $ 37,777,164 $ 5,866,200 (b) $ 43,643,364
Yamaha 20,221,722 20,221,722
Other-manufacturing 1,506,243 1,506,243
Investment income $ 230,650 (a) 230,650
------------- ------------- ------------ -------------
59,505,129 230,650 5,866,200 65,601,979

Cost of sales 53,319,218 53,319,218
------------- ------------- ------------ -------------

Gross Margin 6,185,911 230,650 5,866,200 12,282,761

Postretirement benefits expense 857,098 857,098
Marketing and administrative 484,000 864,000 (d) - (d) 1,348,000
Interest expense - net 2,211,120 (c) 2,211,120
Other expense 55,241 55,241
------------- ------------- ------------ -------------

Income Before Income Taxes $ 4,789,572 $ (2,844,470) $ 5,866,200 $ 7,811,302

Income Tax Provision 3,222,943 (f)
-------------

Net income $ 4,588,359
-------------
Net Income Per Common Share $ 0.48
=============
Weighted Average Number of
Common Shares and Common
Stock Equivalents 9,654,400 (e)
=============
</TABLE>

The Unaudited Proforma Combined Statements of Income for the twelve months ended
December 31, 1996 and October 31, 1995 have been prepared assuming the proposed
acquisition had occurred on November 1, 1994 and reflect the effects of certain
adjustments to the historical financial statements that result from the
acquisition of Columbus Plastics by Core Materials. Columbus Plastics was not a
stand alone division or subsidiary of Navistar and was not generally accounted
for separately. Navistar's systems and procedures do not provide sufficient
information to develop a reasonable cost allocation for income taxes and
interest expense. Accordingly, historical net income per common share amounts
have not been included for the


-29-
32


financial information for Columbus Plastics. A historical statement of income
for Core Materials is not included in the unaudited proforma combined financial
information as the Acquisition was accounted for using reverse acquisition
accounting treatment.

(a) Represents the estimated interest income to be earned on the
mortgage-backed security at the security's effective interest rate of
7%.

(b) Represents the additional revenues resulting from pricing sales by Core
Materials to Navistar reflecting the prices specified in the
Comprehensive Supply Agreement, rather than at Core Materials
historical standard cost.

(c) Represents the estimated interest expense on the Secured Note due to
Navistar at 8% per annum less the interest credit of $520,000 and
$150,000 for the twelve months ended December 31, 1996 and October 31,
1995, respectively, which represents the capitalization of interest on
the Secured Note relating to property, plant and equipment under
construction.

(d) Represents an estimate of the additional administrative expenses to be
incurred by Core Materials as a result of its status as a stand-alone,
publicly owned company rather than an operating unit of a much larger
corporation. Additional costs consist primarily of executive salary
costs and legal and directors fees. The historical marketing and
administrative expense of Columbus Plastics includes allocated
corporate costs which are reflective of the costs that will be charged
to Columbus Plastics pursuant to the Transitional Services Agreement
between Core Materials and Navistar. Accordingly, no adjustments have
been recorded to reflect the impact of the Transitional Services
Agreement on the unaudited proforma combined financial statements.

(e) The weighted average number of common shares and common stock
equivalents outstanding used to calculate net income per common share
include the number of shares of Core Materials common stock outstanding
prior to the acquisition; the number of shares issued to Navistar as
consideration for the Acquisition; and the effect of the exercise of
260,000 dilutive Core Materials stock options, using the treasury stock
method.

(f) Represents the estimated income tax expense for Core Materials based
upon a statutory Federal tax rate of 34% and an estimated Ohio state
and local tax rate of 11%. The income tax expense recorded in the
unaudited proforma combined financial statements is not necessarily
indicative of the cash payments for income taxes that Core Materials
would be required to pay due to Core Materials' substantial net
operating loss carryforwards. Core Materials expects to only be
required to make minimal Federal income tax payments as mandated,
primarily, by the Alternative Minimum Tax regulations until such time
that the loss carryforwards are fully utilized or expired.


6. PROPERTY, PLANT AND EQUIPMENT

Property, plant and equipment consists of the following:

-30-
33

<TABLE>
<CAPTION>

DECEMBER 31, DECEMBER 31, OCTOBER 31,
1996 1995 1995


<S> <C> <C> <C>
Land and land improvements $ 1,607,066 $ 1,480,782 $ 1,480,782
Building and equipment 38,933,211 28,473,930 28,473,930
Tools, dies and patterns 299,135 295,110 295,110
Construction in progress 1,498,558 7,170,187 6,608,206
----------- ----------- -----------

42,337,970 37,420,009 36,858,028
Less accumulated depreciation 17,269,489 15,480,738 15,205,808
----------- ----------- -----------

Property, plant and equipment - net $25,068,481 $21,939,271 $21,652,220
=========== =========== ===========
</TABLE>


Construction in progress primarily relates to the purchase and
installation of SMC presses and certain other SMC capital projects.
Substantially all amounts included in construction in progress at December
31, 1996, December 31, 1995 and October 31, 1995 are expected to be placed
in service within six months from each respective period end. At December
31, 1995 and October 31, 1995 commitments for capital expenditures in
progress, relating to SMC presses, were approximately $2,600,000 and
$1,800,000, respectively. There were no commitments for capital
expenditures in progress at December 31, 1996. Prior to December 31,
1996, Core Materials did not record capitalized interest on construction
in progress as interest expense was not allocated by Navistar to Columbus
Plastics.

7. DEBT

Secured Note

The Secured Note due to Navistar of $29,514,000 at December 31, 1996 bears
interest at the rate of 8% per annum, payable semi-annually, and is
secured by a first priority lien upon and security interest in all of Core
Materials' assets. The Secured Note is due in November 2006. In connection
with the acquisition, Core Materials is also required to pay Navistar
future consideration in the form of an increase in the principal amount of
the Secured Note if Core Materials achieves earnings before interest and
taxes in excess of established thresholds during the period 1997 through
1999. (See Note 4).


Principal payments under the Secured Note are due as follows:

(a.) Within ninety (90) days after the end of each fiscal year of Core
Materials during the term of the Secured Note, Core Materials shall pay
principal in an amount equal to the amount, if any, by which the total
cash and cash equivalents of Core Materials, as shown on Core Materials'
audited balance sheet as of the end of such fiscal year, exceeds
$3,000,000; and

-31-
34

(b.) In the event Core Materials obtains, from time to time, any
refinancing loan (as defined by the terms of the Secured Note), Core
Materials shall promptly upon obtaining such loan pay principal in an
amount equal to the proceeds of such loan.

Based upon the financial position of Core Materials at December 31, 1996,
the Secured Note is classified as long-term on the balance sheet.

The provisions of the Secured Note prohibit the declaration or payment of
cash dividends, the repurchase or retirement of capital stock, as well as
the pledge of any of Core Materials' assets or revenue as a security
lien to a third party as long as the Secured Note is outstanding.

Line of Credit

Subsequent to December 31, 1996, Core Materials entered into a line of
credit facility with a Bank ($3,000,000 maximum availability) for working
capital purposes. The line of credit is repayable on demand, bears
interest at the prime rate (8.25% at December 31, 1996) and is secured
by the mortgage-backed security.

8. EQUITY INVESTMENT ACCOUNT

Cash flows for purchases and sales of inventory, payroll, capital
expenditures, and other expenditures were funded through the intercompany
equity investment account with Navistar. The following summarizes the
changes in the Equity Investment account for the periods presented:

<TABLE>
<CAPTION>

TWO
YEAR ENDED MONTHS ENDED YEARS ENDED OCTOBER 31,
DECEMBER 31, DECEMBER 31, -----------------------
1996 1995 1995 1994
<S> <C> <C> <C> <C>
Balance - beginning of
period $24,206,408 $20,140,446 $14,489,444 $ 13,350,804
Funding of purchases 45,922,756 9,870,093 37,766,508 24,636,830
Net charges from Navistar 19,695,932 3,032,887 19,991,165 16,631,167
Navistar funding of plant
expenses and other 2,777,608 300,196 2,076,547 1,700,381
Net charges to Navistar (36,030,151) (6,344,451) (37,368,465) (32,431,104)
Collections from third
parties (27,781,025) (3,336,388) (21,604,325) (11,864,757)
Income before
interest and taxes 547,046 543,625 4,789,572 2,466,123
Push down of
pension liability from Navistar (244,000)
Issuance of Core Materials
common stock (29,094,574)
----------- ----------- ----------- ------------

Balance - end of period $ $24,206,408 $20,140,446 $ 14,489,444
=========== =========== =========== ============
</TABLE>


-32-
35


FUNDING OF PURCHASES - represents amounts funded by Navistar primarily for
purchases of materials and capital expenditures.

NET CHARGES FROM NAVISTAR - represents amounts charged for payroll and
related expenses, charges for employee health and welfare plans, payments
to union sponsored pension plans and all corporate support services.

NAVISTAR FUNDING OF PLANT EXPENSES - represents amounts transferred to
Columbus Plastics from Navistar as reimbursement for expenses paid by
Columbus Plastics.

NET CHARGES TO NAVISTAR - represents the intercompany sales and charges by
Columbus Plastics to other Navistar manufacturing plants for the sale of
SMC products.

COLLECTIONS FROM THIRD PARTIES - represents amounts collected by Columbus
Plastics on sales to third parties, primarily Yamaha, and collections on
billings for tooling projects.

PUSH DOWN OF PENSION LIABILITY FROM NAVISTAR - represents the push down
from Navistar to Core Materials of the projected benefit obligation for
non-represented employees' pension benefits which was assumed by Core
Materials. See Note 13 for further discussion of the pension obligation.

ISSUANCE OF CORE MATERIALS COMMON STOCK - reverse acquisition accounting
treatment requires that the retained earnings carried forward to Core
Materials as of December 31, should consist of Columbus Plastics'
Equity Investment account, less an amount equivalent to the par value of
Core Materials common stock owned by Navistar. This item represents the
transfer of the Equity Investment account to common stock and retained
earnings.

9. EQUITY

Anti-takeover Measures

Core Materials' Certificate of Incorporation and By-laws contain certain
provisions designed to discourage specific types of transactions involving
an actual or threatened change of control of Core Materials. These
provisions, which are designed to make it more difficult to change
majority control of the Board of Directors without its consent, include
the following:

Removal of Directors - This provision provides that a director of
Core Materials may be removed with or without cause only upon the
vote of the holders of at least 80% of the voting power of the
outstanding shares of capital stock entitled to vote generally in
the election of directors.

Supermajority Approval - This provision requires that a merger
and certain other transactions (as outlined in the Certificate of
Incorporation) be approved by the affirmative vote of the holders
of at least 66 2/3% of the then outstanding shares of Core
Materials' common stock. Such affirmative vote is required
notwithstanding the fact that no vote may be required, or that
a lesser percentage may be specified by law.


-33-
36


Amendments - This provision requires that any amendment to the
provisions relating to the removal of directors be approved by
the holders of at least 80% of the then outstanding shares of
voting stock, and any amendment to provisions requiring the
approval of the holders of at least 66 2/3% of the then
outstanding shares of voting stock be approved by the holders of
at least 66 2/3% of the then outstanding shares of voting stock.


Restrictions on Transfer

Core Materials' Certificate of Incorporation also contains a provision
(the "Prohibited Transfer Provision") designed to help assure the
continued availability of Core Materials' substantial net operating loss
and capital loss carryforwards by seeking to prevent an "ownership
change" as defined under current Treasury Department income tax
regulations. Under the Prohibited Transfer Provision, if a stockholder
transfers or agrees to transfer stock, the transfer will be prohibited
and void to the extent that it would cause the transferee to hold a
"Prohibited Ownership Percentage" (as defined in Core Materials'
Certificate of Incorporation, but generally, means direct and indirect
ownership of 4.5% or more of the Company's common stock) or if the
transfer would result in the transferee's ownership increasing if the
transferee had held a Prohibited Ownership Percentage within the three
prior years or if the transferee's ownership percentage already exceeds
the Prohibited Ownership Percentage under applicable Federal income tax
rules. The Prohibited Transfer Provision does not prevent transfers of
stock between persons who do not hold a Prohibited Ownership Percentage.

Restricted Common Stock

On February 19, 1997, Core Materials issued, in total, 40,200 shares of
common stock, par value $0.01 per share, to approximately 402 employees
(which constituted all of its employees with the exception of certain
executive employees). The Company received no consideration for the
shares. The shares were issued as an incentive for its employees to remain
with the Company and are subject to forfeiture to the Company if an
employee leaves prior to December 31, 1998. During this period, the shares
may not be transferred.

Preferred Stock

The Company has authorized 10,000,000 shares of preferred stock (par
value: $0.01) of which none is issued.

-34-
37


10. STOCK OPTIONS AND EQUITY INCENTIVE PLAN

At the time of the merger of RYMAC into Core Materials, each outstanding
option to purchase shares of RYMAC's common stock granted under any of
RYMAC's previous stock option plans was deemed amended to constitute an
option to acquire, at the same price per share, the same number of shares
of Core Materials' common stock.

At December 31, 1996, there were 260,000 outstanding options each to
purchase one share of Core Materials' common stock at prices ranging from
$0.75 to $1.50, all of which were exercisable. All of the options are held
by executive officers and a former director of RYMAC. There have been no
options granted during the year ended December 31, 1996, the two month
period ended December 31, 1995 or the year ended October 31, 1995;
accordingly, pro forma disclosures as required by Statement of Accounting
Standards No. 123, "Accounting for Stock-Based Compensation" are not
applicable.


Subsequent to year-end, the Board of Directors of Core Materials
authorized the adoption of the Core Materials Corporation -- Long Term
Equity Incentive Plan, subject to the approval of holders of a majority
of the Core Materials' common shares outstanding. The plan allows for
grant of non-qualified stock options, incentive stock options, director
options, stock appreciation rights, restricted stock, performance shares,
performance units and other incentive awards up to an aggregate 1.5
million awards, each award representing a right to buy a share of Core
Materials' common stock. The plan expires on the earlier of December 31,
2006, or the date that the maximum number of available awards under the
plan have been granted.


11. LEASES AND ACCRUED EXPENSES

Core Materials has long-term noncancellable leases for use of equipment
under operating lease agreements. Total rental expense under such
agreements amounted to approximately $563,000 for the year ended December
31, 1996, $83,000 for the two month period ended December 31, 1995 and
$560,000 and $540,000 for the years ended October 31, 1995 and 1994,
respectively.

At December 31, 1996, the aggregate minimum future rental commitments
under noncancellable leases with terms in excess of one year were
approximately $569,000 in 1997; $569,000 in 1998; $273,000 in 1999;
$174,000 in 2000 and $15,000 in 2001.

Accrued expenses at December 31, 1996, December 31, 1995 and October 31,
1995 include $1,174,770, $1,101,456, and $819,522, respectively, for
certain accrued employee benefits.


12. INCOME TAXES

As Navistar's systems and procedures do not provide sufficient information
to develop a reasonable cost allocation for income taxes, income taxes
were not allocated to Columbus Plastics prior to the Acquisition.
Accordingly, there is no income tax expense recorded in the accompanying
financial statements.

The accompanying financial statements include a deferred tax asset for
Core Materials' net operating loss (NOL) and capital loss carryforwards
and the temporary difference between the book and tax basis of Core
Materials' property, plant and equipment. The components of the deferred
tax asset at December 31, 1996 are as follows:


-35-
38


<TABLE>
<CAPTION>

<S> <C>
Property, plant and equipment $ 5,036,000
Net operating loss carryforwards 10,925,000
Capital loss carryforwards 3,332,000
------------
$ 19,293,000
Valuation allowance (6,838,000)
------------

Deferred Tax Asset-Net $ 12,455,000
------------
</TABLE>

A valuation allowance has been provided for those NOL carryforwards and
temporary differences which are estimated to expire before they are
utilized. A full allowance has been provided against the approximately
$9.8 million of capital loss carryforwards, because the capital loss
carryforwards are estimated to expire before they are utilized
($4,800,000 expire in 1999 and $5,000,000 expire in 2001). At December 31,
1996, Core Materials had approximately $32.1 million of NOL carryforwards
available to offset future taxable income. Such carryforwards reflect
income tax losses incurred which will expire as follows:

<TABLE>
<CAPTION>

<S> <C>
2007: $16,656,000
2008: 10,823,000
2009: 3,614,000
2010: 638,000
2011: 400,000
</TABLE>

13. POSTRETIREMENT BENEFITS

Core Materials provides postretirement benefits to substantially all of
its employees. Total postretirement benefits expense includes the pension
expense for salaried employees, retirees and surviving spouses, and
postretirement health care and life insurance expense for all employees,
retirees and surviving spouses and dependents. Core Materials also
participates in a multi-employer defined benefit pension plan for its
union represented employees, and allows all employees to participate in
one of two 401(k) plans, to which Core Materials does not make
contributions. Prior to the Acquisition Core Materials' employees were
participants in the Navistar sponsored pension and postretirement plans.
Navistar allocated postretirement benefit costs to Columbus Plastics
based upon the number of Columbus Plastics participants and their
respective demographic data.

The pension plan for non-represented employees is non-contributory with
benefits related to an employee's length of service and compensation rate.
In connection with the acquisition, Navistar retained responsibility for
vested benefits as of December 31, 1996. Under the principles of reverse
acquisition accounting, the retention of the earned pension liability by
Navistar has been treated as a settlement for that portion of the total
pension obligation. As Navistar did not push down Columbus Plastics'
portion of the total pension liability to their financial statements prior
to the Acquisition, the pension liability as of December 31, 1996 has been
reclassified from the Navistar Equity Investment account. The plan
provisions at December 31, 1996 are substantially the same as the prior
Navistar sponsored defined benefit pension plan for non-represented
employees. The funded status of the non-represented employees' pension
plan as of December 31, 1996 and a reconciliation with the amount


-36-
39
recognized in the Balance Sheet is as follows:

<TABLE>
<CAPTION>

<S> <C>

Accumulated benefit obligation $ 0
========

Projected benefit obligation $400,000
Plan assets at fair value 0
--------

Funded status at December 31, 1996 ( 400,000)

Unrecognized pension costs:

Transition obligation 47,000
Prior service costs 10,000
Net pension losses 99,000
--------

Net liability ($244,000)
</TABLE> ========

All Core Materials' union employees are covered under a multi-employer
defined benefit pension plan administered under a collective bargaining
agreement. This plan is not administered by Core Materials and
contributions are determined in accordance with provisions in the
negotiated labor contract. Pursuant to the terms of the Asset Purchase
Agreement (see Note 4) Navistar withdrew from the multi-employer plan,
and, simultaneously, Core Materials took over Navistar's former
responsibilities in regards to the multi-employer plan. Management has
been advised by the multi-employer plan's actuary that Navistar's
withdrawal from the plan will not result in a withdrawal liability.

The postretirement plan provides healthcare and life insurance for retired
employees; spouses and certain dependents and calls for cost sharing
between Core Materials, Navistar and the participants in the form of
premiums, co-payments and deductibles. The plan is substantially the same
as the plans provided by Navistar prior to the Acquisition. Core Materials
and Navistar share the cost of such benefits based upon the hire date and
retirement status of the employee participant using a formula that
allocates the cost based upon the respective portion of time that the
employee was an active service participant after the Acquisition to the
period of active service prior to the Acquisition. Core Materials will be
fully responsible for the postretirement healthcare and life insurance
benefits for all employees hired after January 1, 1997. Since Columbus
Plastics' accumulated postretirement benefit obligation for healthcare and
life insurance benefits as of December 31, 1996 was fully retained by
Navistar no liability for such benefits is recorded as of December 31,
1996 in the accompanying financial statements.

The costs of postretirement benefits including the effect of the corporate
allocation adjustments (see Note 14) are segregated as a separate
component in the accompanying Statements of Revenues, Direct Expenses and
Identified Corporate Expenses Before Interest and Taxes and approximate
the following:

-37-
40

<TABLE>
<CAPTION>

TWO MONTHS
YEAR ENDED ENDED YEARS ENDED OCTOBER 31,
DECEMBER 31, DECEMBER 31, -------------------------
1996 1995 1995 1994

<S> <C> <C> <C> <C>
Pension expense $ 229,000 $ 31,000 $229,000 $243,000
Multi-employer plan
contrbutions 275,794 45,108 235,098 241,590
Health and life insurance 538,000 75,000 393,000 348,000
---------- -------- -------- --------
Total postretirement
benefits expense $1,042,794 $151,108 $857,098 $832,590
---------- -------- ======== ========
</TABLE>




14. CORPORATE ALLOCATIONS

Prior to its acquisition by Core Materials, Columbus Plastics did not
maintain corporate treasury, legal, tax, purchasing and other similar
corporate support functions. Columbus Plastics did record certain budgeted
corporate expenses related primarily to employee benefits, real estate
taxes and insurance. Adjustments to these amounts to reflect actual
expenditures were not recorded by Columbus Plastics but are included in
the corporate allocation amounts noted below. For purposes of preparing
the financial information for Columbus Plastics certain corporate costs
and credits along with other Navistar Truck Group expenses which were not
budgeted to Columbus Plastics were allocated based upon a variety of
factors which include the size of the Columbus Plastics operation, the
number of Columbus Plastics employees, and the identification of costs
specifically attributable to Columbus Plastics. Management believes that
the allocation method used is reasonable and reflective of Columbus
Plastics' proportionate share of such expenses and is comparable to those
that would have been incurred on a stand-alone basis.

The following summarizes the corporate costs (credits) allocated to
Columbus Plastics which were not budgeted and recorded by Columbus
Plastics. The amounts represent adjustments to the budgeted expenses or
allocations of Navistar Corporate and Truck Group Marketing and
Administrative expenses.

<TABLE>
<CAPTION>

TWO MONTHS
YEAR ENDED ENDED YEARS ENDED OCTOBER 31,
DECEMBER 31, DECEMBER 31, -------------------------
1996 1995 1995 1994

<S> <C> <C> <C> <C>
Cost of sales $(545,000) $(115,000) $(317,000) $(270,000)

Postretirement benefits
expense $ 21,000 $ (12,000) $ 57,000 $(196,000)

Marketing and administrative $ 493,000 $ 81,000 $ 484,000 $ 390,000
</TABLE>

-38-
41


15. RELATED PARTIES

In connection with the acquisition, Core Materials and Navistar entered
into a Supply Agreement and a Transitional Services Agreement (the
"Services Agreement"). Under the terms of the Supply Agreement, for a
period of five years commencing December 31, 1996, Navistar agreed to
purchase from Core Materials, and Core Materials agreed to sell to
Navistar at negotiated prices, which approximate fair value, all of
Navistar's original equipment and service requirements for Fiberglass
Reinforced Parts using the Sheet Molding Composite process as they
currently exist or as they may be improved or modified. On a pro forma
basis, pursuant to the terms of the Supply Agreement, Core Materials would
have charged Navistar for sales of its products approximately $35,670,000,
$6,210,000, $43,640,000 and $37,600,000 for the year ended December 31,
1996, the two month period ended December 31, 1995, and for the years
ended October 31, 1995 and 1994, respectively. However, no minimum
quantities of annual production of products or minimum purchase quantities
are set forth or implied in the Supply Agreement, and no penalties will be
imposed on Navistar for volumes of products actually ordered by Navistar
below those quantities forecasted. Under the terms of the Services
Agreement, Navistar will provide financial reporting, accounting, computer
services, and office support services to Core Materials and procure
insurance on Core Materials' behalf for up to three years at fees based
upon actual hours incurred, the cost of Navistar personnel and related
expenses, and any costs incurred by Navistar in providing such services
and purchases. Management believes that the costs that will be incurred
pursuant to the Services Agreement will approximate the amounts
historically allocated to Columbus Plastics (see Note 14).

16. LABOR CONCENTRATION

At December 31, 1996, Core Materials had 340 manufacturing employees all
of which were represented by the International Association of Machinists
and Aerospace Workers ("IAM"). The collective bargaining agreement with
the IAM expires on August 1, 1998.


17. QUARTERLY RESULTS OF OPERATIONS (UNAUDITED)

The following is a summary of the unaudited quarterly results of
operations for the years ended December 31, 1996 and October 31, 1995. The
results for the two month period ended December 31, 1995 are not presented
herein as audited results are provided in the accompanying financial
statements.

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42

<TABLE>
<CAPTION>

QUARTER
------------------------------------------------------------------
FIRST SECOND THIRD FOURTH
----- ------ ----- ------
<S> <C> <C> <C> <C>
DECEMBER 31, 1996
Net sales $ 14,601,363 $ 13,470,421 $ 10,846,590 $ 13,548,435
Gross profit 493,968 13,682 419,360 806,226
Income (loss) before interest and taxes 66,731 (420,563) 50,082 850,796


OCTOBER 31, 1995

Net sales $ 12,472,584 $ 16,444,155 $ 15,002,464 $ 15,585,926
Gross profit 598,622 2,437,777 2,009,334 1,140,178
Income before interest and taxes 272,645 2,077,263 1,654,462 785,202
</TABLE>

******

ITEM 9. CHANGES IN AND DISAGREEMENTS WITH INDEPENDENT AUDITORS ON ACCOUNTING
AND FINANCIAL DISCLOSURE.

Core Materials previously reported the information required by this
Item 9 in a Form 8-K, as amended by a Form 8-K/A (filed with the Securities
Exchange Commission on January 14, 1997 and January 27, 1997, respectively.)


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43


PART III

ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT.

The information required to be set forth hereunder has been
incorporated by reference herein from the Company's Proxy Statement for its 1997
Annual Meeting of Stockholders to be held on or about May 29, 1997.

ITEM 11. EXECUTIVE COMPENSATION.

The information required to be set forth hereunder has been
incorporated by reference herein from the Company's Proxy Statement for its 1997
Annual Meeting of Stockholders to be held on or about May 29, 1997.

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND
MANAGEMENT.

The information required to be set forth hereunder has been
incorporated by reference herein from the Company's Proxy Statement for its 1997
Annual Meeting of Stockholders to be held on or about May 29, 1997.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS.

The information required to be set forth hereunder has been
incorporated by reference herein from the Company's Proxy Statement for its 1997
Annual Meeting of Stockholders to be held on or about May 29, 1997.

PART IV

ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES, AND REPORTS
ON FORM 8-K.

(a)(1) Financial Statements
---------------------

The following financial statements are included in Part II, Item 8 of
this Form 10-K:

Independent Auditors' Report
Balance Sheets
Statements of Revenues, Direct Expenses and Identified Corporate Expenses Before
Interest and Taxes
Notes to Financial Statements

(a)(2) Financial Statement Schedules
-----------------------------


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44


All schedules are omitted because of the absence of the conditions
under which they are required.

(a)(3) Exhibits
--------

The following "Index to Exhibits" lists the exhibits that are included
as a part of this Form 10-K:

INDEX TO EXHIBITS

Exhibit No. Description Location
- ----------- ----------- ---------

2.1 Asset Purchase Agreement Incorporated by
dated as of September 12, 1996, reference to Exhibit
as amended October 31, 1996, 2-A to Form S-4
between Navistar and RYMAC** (filed November 8,
1996, SEC File
No. 333-15809)

2.1.1 Second Amendment to Asset Purchase
Agreement dated December 16, 1996 Page No. 1

2.2 Agreement and Plan of Merger Incorporated by
dated as of November 1, 1996, reference to Exhibit
between Core Materials and 2-B to Form S-4
RYMAC (filed November 8,
1996, SEC File
No. 333-15809)

3.1 Certificate of Incorporation of Incorporated by
Core Materials Corporation reference to Exhibit
3-A to Form S-4,
(filed November 8,
1996, SEC File
No. 333-15809)

3.1.1 Certificate of Amendment of Incorporated by
Certificate of Incorporation reference to Exhibit
of Core Materials Corporation 3-B to Form S-4,
(filed November 8,
1996, SEC File
No. 333-15809)

3.2 By-Laws of Core Materials Incorporated by
Corporation reference to Exhibit


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45
3-C to Form S-4
(filed November 8,
1996, SEC File No.
333-15809)


4.1 Certificate of Incorporation of Incorporated by
Core Materials Corporation reference to Exhibit
3-A to Form S-4
(filed November 8,
1996, SEC File No.
333-15809)

4.1.1 Certificate of Amendment of Incorporated by
Certificate of Incorporation reference to Exhibit
of Core Materials Corporation 3-B to Form S-4,
(filed November 8,
1996, SEC File
No. 333-15809)

10.1 Core Materials Corporation Page No. 4
Secured Promissory Note

10.1.1 Amendment No. 1 to Secured
Promissory Note Page No. 25

10.2 Comprehensive Supply Agreement Page No. 27

10.3 Transitional Services Agreement Page No. 42

10.4 Registration Rights Agreement Page No. 54

10.5 Long Term Equity Incentive Plan* Page No. 69

10.6 1995 Stock Option Plan* Page No. 88

10.7 Letter Agreement Regarding
Severance Pay to Richard R. Conte* Page No. 95

10.8 Letter Agreement with Hellmold
Associates, Inc. dated November 1, 1995,
as amended April 10, 1996
and July 18, 1996* Page No. 97

10.9 Oral Compensation Agreement with Page No. 107
Malcolm M. Prine*

11.1 Computation of Earnings per share The Exhibit is
ommited because of
the absence of the
conditions under
which it would be
required


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46


24.1 Power of Attorney for
Kenneth M. Schmell Page No. 108

24.2 Power of Attorney for
Richard R. Conte Page No. 109

24.3 Power of Attorney for
Gerald L. Voirol Page No. 110

24.4 Power of Attorney for
Ralph O. Hellmold Page No. 111

24.5 Power of Attorney for
Thomas M. Hough Page No. 112

24.6 Power of Attorney for
Malcolm M. Prine Page No. 113

24.7 Power of Attorney for
Thomas E. Rigsby Page No. 114

27.1 Financial Data Schedule Page No. 115

*Indicates management contracts or compensatory plans that are required to be
filed as an exhibit to this Form 10-K.

**The following schedules and exhibits are omitted from Exhibit 2-A of
Core Materials' Form S-4, as filed on November 8, 1996, and as incorporated
herein by reference. Core Materials will provide any omitted schedule or
exhibit to the Commission upon request:

Exhibit A (Buyer Note)
Exhibit B (Specialty Warranty Deed)
Exhibit C (Supply Agreement)
Exhibit D (Registration Rights Agreement)
Exhibit E (Transition Services Agreement)
Schedule 1(b)(ii) (Equipment)
Schedule 1(b)(iii) (Computer Software)
Schedule 1(b)(iv) (Contracts)
Schedule 1(b)(vii) (Real Property)
Schedule 1(g)(vi) (Categories and Methodology)
Schedule 1(h) (Allocation of Purchase Price)
Schedule 3(a)(iv) (Company and Third Party Approvals)
Schedule 3(a) (v) (Governmental Approvals)
Schedule 3(b)(xv) (Disclosed Liabilities)
Schedule 4(c) (Liens)
Schedule 4(d) (Existing Leases, Liens, and Possession or Occupancy Agreements)
Schedule 4(e) (Intellectual Property)
Schedule 4(f) (Disclosure with respect to non-binding Contracts)
Schedule 4(g) (Litigation)
Schedule 4(h) (Financial Statements)
Schedule 4(i) (Compliance with Laws)
Schedule 4(j) (Asset Sufficiency)
Schedule 4(k) (Seller Plans)
Schedule 4(m) (Undisclosed Liabilities)
Schedule 5(b) (Non-Ordinary Conduct)
Schedule 6(b)(i) (Certain Stock)
Schedule 6(b)(ii) (Articles and By-Laws)
Schedule 6(b) (iii) (Recourse Against Buyer)
Schedule 6(b)(iv) (Stockholder Agreements)
Schedule 6(c) (Subsidiaries; Investments)
Schedule 6(d) (Buyer Financial Schedules)
Schedule 6(h)(i) (Buyer Contracts)
Schedule 6(h)(ii) (Non-terminable Contracts without penalty or premium)
Schedule 6(h)(iii) (Contracts in Breach or default)
Schedule 6(k)(i) (Tax Matters)
Schedule 6(k)(ii) (NOLs)
Schedule 6(k)(iii) (Territories Buyer Required to File Tax Returns)
Schedule 6(m) (Buyer Litigation)
Schedule 6(n) (Compliance with Laws)
Schedule 6(o) (Guidelines or Policies)
Schedule 8(k) (Hired Employees of Seller)
Schedule 30 (Representatives of Buyer).

(b) Reports on Form 8-K
-------------------

In a Form 8-K as amended by a Form 8-K/A (filed with the
Securities and Exchange Commission on January 14, 1997 and January 27, 1997,
respectively), the Company reported the purchase of substantially all of the
assets and liabilities of Navistar's Columbus Plastics operating unit, discussed
in Item 1. The Form 8-K, as amended by the Form 8-K/A also discussed the
appointment of Deloitte & Touche LLP as independent auditors for Core Materials.

The Form 8-K incorporated by reference the following financial
statements and pro forma financial information: (1) the information set forth
under the caption "Columbus Plastics Operation (An Operating Unit of Navistar
International Transportation Corp.)" on pages F-1 to F-9 of the Company's Form
S-4 Registration Statement dated November 8, 1996 (SEC Registration No.
333-15809); and (2) the information set forth under the caption "Unaudited Pro
Forma Combined Financial Information of Core Materials" on pages 47-54 of the
Company's Form S-4 Registration Statement dated November 8, 1996 (SEC
Registration No. 333-15809).


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47


SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities
Exchange Act of 1934, the registrant has duly caused this report to be signed on
its behalf by the undersigned, thereunto duly authorized.

Core Materials Corporation

By /s/ KENNETH M. SCHMELL
-------------------------------
Kenneth M. Schmell
General Manager and Acting Chief Executive Officer

Date 3/31/97
------------

Pursuant to the requirements of the Securities Exchange Act of 1934,
this report has been signed below by the following persons on behalf of the
registrant and in the capacities and on the dates indicated:

/s/ RICHARD R. CONTE
-------------------------------
Richard R. Conte
Acting Chief Financial Officer and Director
(Chief Accounting Officer)

Date 3/31/97
------------

*
-------------------------------
Gerald L. Voirol
Controller and Assistant Secretary

Date
------------

*
-------------------------------
Ralph O. Hellmold
Director

Date
------------

*
-------------------------------
Thomas M. Hough
Director

Date
------------

*
-------------------------------
Malcolm M. Prine
Director
-45-
48

Date
------------

*
-------------------------------
Thomas E. Rigsby
Director

Date
------------

/s/ RICHARD R. CONTE
*By: -----------------------------
Richard R. Conte
Attorney-In-Fact
Date: 3/31/97
-----------


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