Document:

<PAGE>   1
                                                                 Exhibit 10.13.2

                 AMENDMENT NO. 2 TO THE STOCKHOLDER'S AGREEMENT
                                     BETWEEN
                    UCAR INTERNATIONAL INC. AND GRAFTECH INC.

      The Stockholder's Agreement between UCAR International Inc. and Graftech
Inc. (the "Stockholder's Agreement") is hereby amended, in accordance with the
following:

      1. Section 4.1(a) is hereby amended in its entirety to read as follows:

      "(a) Upon written request at any time and from time to time by UCAR, the
Company will as expeditiously as reasonably practicable use its reasonable
efforts to (x) register and qualify (i) all (or such part as may be specified by
UCAR) of the shares of Common Stock owned or held directly or indirectly by UCAR
so as to permit, during periods of not less than 120 days in respect of each
such request, the offer or sale thereof (on an underwritten basis or otherwise
as designated by UCAR) to the public and/or the distribution thereof to UCAR's
stockholders (including its public stockholders) and (ii) all of the shares of
Common Stock owned or held by directors, officers and employees of UCAR so as to
permit, during all periods of time, the offer and resale thereof to the public,
in each case in the United States and such other countries as UCAR may
reasonably designate, and (y) list or maintain the listing of such shares on the
principal stock exchange or market on which the Common Stock is then listed.
Such registration and qualification shall include, as necessary or appropriate
in UCAR's judgment, registration under the Securities Act and the Exchange Act
(as defined below), preparation, filing and dissemination of information or
proxy statements under the Securities Exchange Act of 1934, as amended, and the
rules and regulations promulgated thereunder, as the same may be amended from
time to time (the "Exchange Act"), registration or qualification (or obtaining
exemption therefrom, if so approved by UCAR) under state and foreign securities
laws, preparation and filing of applications, notices and other documents under
the rules of all relevant stock exchanges or markets, entering into and
performing obligations under an underwriting agreement relating to offers and
sales to the public to be underwritten on an firm commitment basis by
underwriters (whom UCAR shall have the right to designate), and maintenance of
such registrations and qualifications, and of the completeness and accuracy in
all material respects of such information and proxy statements, throughout such
periods. Notwithstanding the foregoing, the Company shall not be required to
effect more than two registrations under the Securities Act pursuant to clause
(x)(i) of this Section 4.1 during any fiscal year of the Company. Such a
distribution shall not be deemed to be a sale for purposes of this Section 4 or
the definition of "Public Offering" in Section 1. Notwithstanding anything
contained therein to the contrary, Section 4.1(c) shall not apply to the
Company's obligations under clause (x)(ii) of this Section 4.1(a). The IPO will
be deemed to be effected pursuant to this Section 4."

      2. Sections 4.3(c) and 4.3(d) are hereby amended in their entirety to read
as follows:

      "(c) The Company may require any Person that is selling or distributing
shares of Common Stock pursuant to Section 4.1 or 4.2 (the "Seller") to furnish
to the Company such information regarding the Seller and the intended sale or
distribution of such shares of Common
<PAGE>   2
Stock as may from time to time reasonably be requested in writing in order to
comply with the Securities Act, the Exchange Act and other applicable laws,
rules and regulations.

      (d) Except as otherwise provided in Section 7.4, the Company will pay all
Registration Expenses in connection with each registration, qualification or
distribution of Common Stock pursuant to this Section 4, regardless of whether
such registration or qualification becomes effective or such distribution is
completed, and the Seller shall pay all underwriting discounts and commissions
and stamp, transfer and other taxes, if any, relating to the sale or
distribution of shares of Common Stock by such Seller pursuant to this Section
4."

      3. Section 4.4 is hereby amended in its entirety to read as follows:

      "4.4  Indemnification.

      (a) Indemnification by the Company. The Company will indemnify and hold
harmless, and will, if so requested by UCAR, agree in any underwriting agreement
entered into in connection with any offer or sale of securities pursuant to this
Section 4 that it will indemnify and hold harmless, UCAR, each Affiliate of UCAR
and their respective directors, officers, employees and general and limited
partners (and the directors, officers, employees, affiliates and controlling
Persons thereof), each other Seller, each Person who participates as an
underwriter in the offering or sale of securities by UCAR or any other Seller,
and each other Person, if any, who controls UCAR, any other Seller or any such
underwriter within the meaning of the Securities Act or the Exchange Act
(collectively, the "Indemnified Parties") against any and all losses, claims,
damages or liabilities, joint or several, and expenses to which such Indemnified
Party may become subject under the Securities Act, the Exchange Act, common law
or otherwise, insofar as such losses, claims, damages or liabilities (or actions
or proceedings in respect thereof, whether or not such Indemnified Party is a
party thereto) arise out of or are based upon (i) any untrue statement or
alleged untrue statement of any material fact contained in any registration
statement, any preliminary, final or summary prospectus, any proxy or
information statement, any amendment or supplement thereto, or any document
incorporated therein by reference, prepared, filed, published, delivered or
furnished by the Company in connection with the transactions contemplated by
this Section 4 or (ii) any omission or alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading in the light of the circumstances under which they were
made or (iii) any breach or violation or alleged breach or violation of any
representation, warranty or agreement made by the Company contained in any such
underwriting agreement (including representations, warranties and agreements
made jointly, or jointly and severally, with UCAR or others, which
representations, warranties and agreements shall, for purposes hereof, be deemed
and construed to have been made solely and exclusively by the Company) and the
Company will reimburse such Indemnified Party for any and all legal or other
expenses reasonably incurred by it in connection with investigating or defending
any such loss, claim, damage, liability, action or proceeding; provided, that
the Company shall not be liable to any Indemnified Party in any such case to the
extent that any such loss, claim, damage, liability, action, proceeding or
expense arises out of or is based upon any untrue statement or alleged untrue
statement or omission or alleged omission made in any such registration
statement, in any such preliminary, final or summary prospectus, in any such
proxy or information statement, in any such amendment or supplement, or in any
such document incorporated by reference, in reliance upon and in
<PAGE>   3
conformity with written information with respect to such Indemnified Party
furnished to the Company by such Indemnified Party expressly for use in the
preparation thereof (and, for purposes of this Section 4, no information shall
be deemed to have been so provided by UCAR or any other Seller, including
information resulting from participation by directors, officers or employees of
UCAR in meetings or document reviews or information derived from UCAR's
accounting, business or other records or files, unless it specifically refers to
this Section 4.4(a) and specifically states that it has been so provided); and
provided, further, that the Company will not be liable to any Person who
participates as an underwriter in the offering or sale of securities or any
other Person, if any, who controls such underwriter within the meaning of the
Securities Act, under the indemnity agreement in this Section 4.4, with respect
to any preliminary prospectus, final prospectus or final prospectus as amended
or supplemented, as the case may be, to the extent that any such loss, claim,
damage or liability of such underwriter or controlling Person results from the
fact that such underwriter sold such securities to a Person to whom there was
not sent or given, at or prior to the written confirmation of such sale, a copy
of the final prospectus or of the final prospectus as then amended or
supplemented, whichever is most recent, if the Company has previously furnished
copies thereof to such underwriter. Such indemnity shall remain in full force
and effect regardless of any investigation made by or on behalf of such
Indemnified Party and shall survive the Transfer of securities by UCAR or any
other Seller.

      (b) Indemnification by UCAR and Underwriters. The Company may require, as
a condition to its obligations under this Section 4, that the Company shall have
received an undertaking reasonably satisfactory to it from the UCAR Party (as
defined below) or any such underwriter to indemnify and hold harmless (in the
same manner and to the same extent as set forth in Subsection (a), except that
the indemnification obligation shall be several and not joint) the Company and
all other selling stockholders, if any, as the case may be, and any of their
respective affiliates, directors, officers, employees and controlling Persons,
with respect to any untrue statement or alleged untrue statement in or omission
or alleged omission from any such registration statement, any such preliminary,
final or summary prospectus, any such information or proxy statement, any such
amendment or supplement, or any such document incorporated by reference, if such
untrue statement or alleged untrue statement or omission or alleged omission was
made in reliance upon and in conformity with written information with respect to
the UCAR Party or underwriter provided to the Company by the UCAR Party or
underwriter expressly for use in the preparation thereof. Such indemnity shall
remain in full force and effect regardless of any investigation made by or on
behalf of the Company or any of the other selling stockholders, or any of their
respective affiliates, directors, officers, employees or controlling Persons,
and shall survive the Transfer of securities by the UCAR Party. The liability of
any UCAR Party for any indemnification under this Section 4.4 shall be limited
to an amount equal to the net proceeds (after deducting any underwriters'
commission or discount) received by such UCAR Party in connection with the sale
of the relevant securities.

      (c) Notices of Claims, Etc. Promptly after receipt by an Indemnified Party
hereunder of written notice of the commencement of any action or proceeding with
respect to which a claim for indemnification may be made pursuant to this
Section 4.4, such Indemnified Party will, if a claim in respect thereof is to be
made against an indemnifying party, give written notice to the latter of the
commencement of such action; provided, that the failure of such Indemnified
Party
<PAGE>   4
to give notice as provided herein shall not relieve the indemnifying party of
its obligations under such Subsections (a) or (b) of this Section 4.4, except to
the extent that the indemnifying party is actually prejudiced by such failure to
give notice. In case any such action or proceeding is brought against an
Indemnified Party, unless in such Indemnified Party's reasonable judgment a
conflict of interest between the indemnified and indemnifying parties may exist
in respect of the claim to which such action or proceeding relates and separate
counsel is not employed as described below, the indemnifying party will be
entitled to participate in and to assume the defense thereof, jointly with any
other indemnifying party similarly notified, to the extent that it may wish,
with counsel reasonably satisfactory to such Indemnified Party, and after notice
from the indemnifying party to such Indemnified Party of its election so to
assume the defense thereof, the indemnifying party will not be liable to such
Indemnified Party for any legal or other expenses subsequently incurred by the
latter in connection with the defense thereof other than reasonable costs of
investigation. If, in such Indemnified Party's reasonable judgment, having
common counsel would result in a conflict of interest between the interests of
such indemnified and indemnifying parties, then such Indemnified Party may
employ separate counsel reasonably acceptable to the indemnifying party to
represent or defend such Indemnified Party in such action or proceeding, it
being understood, however, that the indemnifying party shall not be liable for
the reasonable fees and expenses of more than one separate firm of attorneys at
any time for all such Indemnified Parties (and not more than one separate firm
of local counsel at any time for all such Indemnified Parties) in such action or
proceeding. No indemnifying party will consent to entry of any judgment or enter
into any settlement which does not include as an unconditional term thereof the
giving by the claimant or plaintiff to the Indemnified Parties of a release from
all liability in respect of such claim or litigation. An indemnifying party
shall not be liable for any settlement of any action, proceeding or claim
effected without its prior written consent, which shall not be unreasonably
withheld.

      (d) [OMITTED]

      (e) Contribution. If recovery is not available under the foregoing
indemnification provisions of this Section 4.4 for any reason other than as
expressly specified therein, the parties entitled to indemnification by the
terms thereof shall be entitled to contribution to as to all losses, claims,
damages, liabilities and expenses specified in the foregoing indemnification
provisions of this Section 4.4 except to the extent that contribution is not
permitted under Section 11(f) of the Securities Act. In determining the amount
of contribution to which the respective parties are entitled, there shall be
considered the relative benefits received by each party from the sale of the
relevant securities (taking into account the portion of the proceeds realized by
each), the parties' relative fault in connection with the statements or
omissions which resulted in losses, claims, damages, expenses or liabilities,
including the parties' knowledge and access to information concerning the matter
with respect to which the claim was asserted and the opportunity to correct and
prevent any misstatement or omission, and any other equitable considerations
appropriate under the circumstances.

      (f) Non-Exclusivity. The obligations of the parties under this Section 4.4
shall be in addition to any liability which any party may otherwise have to any
other party. If the underwriting agreement relating to any offering covered by
this Section 4.4 provides for indemnification and contribution of the type
described in this Section 4.4, then such provisions shall supersede and replace
this Section 4.4 (other than this Subsection (f)) insofar as it
<PAGE>   5
specifically provides for indemnification or contribution between the same
Persons with respect to such offering. An underwriting agreement which primarily
provides for indemnification and contribution by UCAR and the Company, on the
one hand, and underwriters, on the other hand, (but not between the Company, on
the one hand, and such UCAR Party or Parties, on the other hand) shall not
supersede or replace this Section 4.4. Notwithstanding the preceding sentences
of this Subsection 4.4(f), no provision of an underwriting agreement shall
supercede or replace this Section 4.4 as between UCAR and the Company unless it
specifically mentions this Subsection 4.4(f) and specifically provides that it
shall so supercede or replace this Subsection 4.4.

      (g) UCAR Party. "UCAR Party" shall mean UCAR or its Subsidiary or
Subsidiaries (other than the Company and its Subsidiaries) or its directors,
officers or employees, whichever offers, sells or distributes the relevant
securities."<PAGE>   1
                                                                   Exhibit 10.14

               CERTAIN PORTIONS OF THIS EXHIBIT HAVE BEEN OMITTED
                  BASED ON A REQUEST FOR CONFIDENTIAL TREATMENT

                   OMITTED PORTIONS HAVE BEEN SEPARATELY FILED
                   WITH THE SECURITIES AND EXCHANGE COMMISSION

                           MEMORANDUM OF UNDERSTANDING

                                      MADE

                                 APRIL 12, 2000

                                     BETWEEN

                              UCAR GRAPH-TECH INC.

                                       AND

                         MAZARIN MINING CORPORATION INC.
<PAGE>   2
Memorandum of Understanding made April 12, 2000 between UCAR Graph-Tech Inc., a
Delaware corporation ("GRAPH-TECH") and Mazarin Mining Corporation Inc., a
Quebec corporation ("Mazarin").

RECITALS:

1.       Mazarin owns a 100% interest, except for rights currently held by the
         Fonds d'exploration miniere du Nouveau-Quebec or its successors, in a
         graphite deposit located at Lac Knife, Quebec, Canada, as more
         particularly described in Appendix D (the "Deposit"). Mazarin also owns
         rights in various graphite exploration properties and permits located
         within 100 miles of the Deposit (the "Additional Permits", as listed
         and shown in Appendix D (the Deposit and Additional Permits
         collectively referred to as the "Ownership Interest")

2.       GRAPH-TECH believes the graphite contained in the Deposit may be of use
         in its production of advanced graphite materials. GRAPH-TECH, directly
         or through a corporation affiliated with GRAPH-TECH, is willing to fund
         the expenses of a feasibility study (the "Study") on the Deposit.
         References herein to "GRAPH-TECH" shall mean GRAPH-TECH, or a
         GRAPH-TECH affiliate.

3.       Upon completion of the Study, GRAPH-TECH shall be entitled to an
         ownership interest in the Vehicle (as defined in Section 1 below), as
         described in Section 3 below, and have a period of time, which may be
         extended by making option payments to Mazarin, to determine whether it
         wishes to develop, jointly with Mazarin, the Deposit for purposes of
         commercial production (a "Development Decision").

4.       Conditional upon the Development Decision, GRAPH-TECH wishes to enter
         into a long-term agreement for the purchase of graphite produced from
         the Deposit including the terms described in Appendix C (the "Offtake
         Contract").

5.       This Memorandum sets out the basic terms pursuant to which the parties
         will arrange for equity and debt financing of the development of the
         Deposit if a Development Decision is made.

6.       GRAPH-TECH will acquire an equity interest in Mazarin (the "Equity
         Investment"), conditional upon execution of this Memorandum, on terms
         described in Appendix B.

NOW THIS MEMORANDUM WITNESSES AS FOLLOWS:

1.       THE VEHICLE. Within 30 days of the closing of the Subscription
Agreement, Mazarin shall establish a single-purpose corporation or other legal
entity without debt or other obligations, as agreed by the parties (the
"Vehicle"). Immediately upon creation of the Vehicle, Mazarin shall transfer the
entire Ownership Interest to the Vehicle, in the most efficient manner for tax
purposes.

         The Vehicle shall be operated on a sound commercial basis as a profit
centre and shall be established in a form and in a jurisdiction agreeable to the
parties having regard to the tax implications to GRAPH-TECH and Mazarin among
other matters. GRAPH-TECH and Mazarin shall enter into a shareholders agreement
or equivalent agreement (the "Shareholders Agreement") no later than upon the
completion of Phase 1 of the Study. The Shareholders
<PAGE>   3
Agreement shall contain terms consistent with this Memorandum and cover matters
including board composition, approval of budgets and programs, management and
human resources, the project and expansions, restrictions on transfers of
interest, default and compulsory sale of interest, dispute resolution and
matters requiring approval by special majorities, as some are more specifically
described in Schedule "A". The parties shall commence good faith negotiations as
to the content of the Shareholders Agreement upon the execution of this
Memorandum and shall execute the Shareholders Agreement no later than upon
completion of Phase One of the Study.

         The Vehicle shall comply with all laws applicable to the Vehicle and
the business in which it operates, including but not limited to, applicable
health, environment and safety laws and regulations. The Vehicle shall adopt a
comprehensive health, safety and environmental compliance policy with conditions
as least as restrictive as those contained in GRAPH-TECH's then current policy
with the addition of those policies/procedures that would be necessary or
appropriate for the proper operation of a graphite mining and processing
facility.

2.       STUDY. The Study shall be initiated and undertaken by GRAPH-TECH, at
its sole expense, in order to determine if the graphite to be mined and
processed from the Deposit is technically suitable for use in GRAPH-TECH's
business and mining of the Deposit is economically viable using parameters
acceptable to the Shareholders. GRAPH-TECH shall reimburse Mazarin for its
reasonable expenses for work performed during the Study and requested by the
Study Committee, as defined in Section 4. The Study shall consist of three
phases as described below.

         Phase One, the pre-evaluation stage, will include the testing of an
approximately three (3) tonne sample of graphite concentrate from the Deposit
delivered to GRAPH-TECH's specifications for use in GRAPH-TECH's production.
Mazarin shall make available to GRAPH-TECH, at the location and within the
timetable set out in Appendix E, sufficient quantities of concentrate in order
to allow GRAPH-TECH to produce a sample within the quantity and size
specifications set out in Appendix E.

         Phase Two, the bulk sample stage, will include the production of a bulk
sample of 100 to 200 tonnes of graphite concentrate to be produced and
delivered, at GRAPH-TECH's sole cost and expense, to GRAPH-TECH's specifications
for use in GRAPH-TECH's production. GRAPH-TECH may remove sufficient quantities
of ore from the Deposit in order to allow GRAPH-TECH to produce concentrate
within the quantity and size specifications set out in Appendix E. Mazarin shall
assist GRAPH-TECH in obtaining all required authorizations in order to mine and
remove sufficient ore to produce such concentrate and in the coordination of the
removal of the ore. GRAPH-TECH shall produce, in addition to its requirements,
an additional five (5) tonne sample of graphite concentrate, having the same
specifications, for the benefit of the Vehicle.

         Phase Three, the feasibility stage, shall include, without limitation,
the definition of ore reserves, the mining plan and equipment, environmental
surveys, process facilities, power supply, site layout, capital and operating
cost estimates, manpower and training requirements, services and infrastructure,
legal and permitting requirements, site restoration and waste disposal, economic
analysis, and project implementation and schedule for the development of the
Deposit The feasibility study shall conform to industry standards and cover the
scope of the activity

                                     - 2 -
<PAGE>   4
described in this paragraph.

3.       INITIAL INTEREST. Upon completion of the Study ("Study Completion"),
and in consideration thereof, Mazarin shall transfer to GRAPH-TECH a 25%
interest in the Vehicle (the "Initial Interest"). For purposes of this
Memorandum, Study Completion shall be deemed to have occurred on the date which
GRAPH-TECH delivers to the Study Committee (as hereinafter defined), a final
report as contemplated in Phase Three of the Study.

         GRAPH-TECH may elect to discontinue the Study at any time without any
further obligation, by written notice to the Study Committee. If GRAPH-TECH
elects to discontinue the Study, all work product related solely to the
feasibility of the project shall be contributed to the Vehicle and all work
product related to the use of the graphite flake in GRAPH-TECH's production
shall remain GRAPH-TECH's property unless otherwise agreed in writing.

4.       STUDY COMMITTEE. Upon execution of this Memorandum, the parties shall
establish a five (5) member Study Committee (the "Study Committee"), to which
GRAPH-TECH shall deliver the Study results. GRAPH-TECH shall appoint three
members of the Study Committee and Mazarin shall appoint two members. Either
party may replace or substitute its members on the Study Committee upon notice
to the Study Committee. Decisions of the Study Committee shall be made by
majority vote. The Study Committee shall agree on the specific terms and
objectives for Phase Three of the Study. Should GRAPH-TECH make a Development
Decision and elect to go forward with the development of the Deposit, the Study
Committee shall become the Vehicle's management committee and board of
directors. The management committee shall then appoint a Manager/President who
will be responsible for the day-to-day operation of the Vehicle.

5.       OPTION. After completion of the Study, GRAPH-TECH shall have until
December 31, 2002 (the "Option Period") to determine if it wishes to make a
Development Decision or wishes to extend the time in which it may make the
Development Decision.

GRAPH-TECH may extend the Option Period for up to five (5) additional
consecutive one-year periods (each an "Extension Period"). The Development
Decision can be made at any time during the Option Period or through to and
including December 31 of each of the following Extension Periods upon delivering
payments ("Extension Payments") to Mazarin during the applicable Extension
Period in the amounts indicated below:

<TABLE>
<CAPTION>
              YEAR                                    OPTION PAYMENT
<S>                                                   <C>
              2003                                    $  500,000.00
              2004                                    $1,000,000.00
              2005                                    $1,500,000.00
              2006                                    $2,000,000.00
              2007                                    $2,500,000.00
</TABLE>

         A pro rata portion of each Extension Payment shall be paid monthly by
the last day of each month throughout the applicable Extension Period. If, prior
to a Development Decision being made during any Extension Period, GRAPH-TECH
fails to make an Extension

                                     - 3 -
<PAGE>   5
Payment, Mazarin shall notify GRAPH-TECH in accordance with Section 16 hereof
and GRAPH-TECH shall have a period of 30 days thereafter to make such payment,
otherwise the dilution provisions in the Shareholders Agreement shall apply.

         GRAPH-TECH will give Mazarin a written notice of its intention to
extend the period in which it may make the Development Decision at least 30 days
prior to the beginning of the applicable Extension Period. In the event
GRAPH-TECH elects not to make a Development Decision by December 31, 2002, or
prior to the termination of any applicable Extension Period, Mazarin may require
GRAPH-TECH to transfer its interest in the Vehicle to Mazarin for a sum of
$1,000,000.00 or GRAPH-TECH's interest shall be diluted on a basis to be set out
in the Shareholders Agreement.

6.       DEVELOPMENT DECISION. Once the Development Decision is made and notice
thereof delivered to Mazarin, the Study Committee shall use the approved
feasibility study to delineate the initial project (the "Initial Project") for
the complete development of the Deposit. Immediately upon GRAPH-TECH making a
Development Decision, the Extension Payments to Mazarin shall cease and the
Vehicle shall initiate reasonable efforts to begin mining operations within 24
months. Should the Vehicle be unable to begin operations within the 24 months
for reasons other than (i) a force majeure event or by (ii) inaction or event
caused or contributed to by Mazarin, which delay the beginning of mining
operations, GRAPH-TECH shall recommence Extension Payments to Mazarin. The
Extension Payments will recommence as if the Development Decision and the time
period in between had not occurred. The Extension Payments shall cease
permanently when the Vehicle is able to begin mining operations. For example if
GRAPH-TECH makes a Development Decision on June 30,2003 and then 25 months later
has through inaction, caused the Vehicle to fail to be able to begin mining
operations, the Extension Payment that would have been due for July, 2003 shall
then become due and payments would continue from that point as if no Development
Decision had been made. The Extension Payments would end when the Vehicle is
able to begin operations.

         Upon making the Development Decision, the Vehicle shall enter into the
Offtake Contract with GRAPH-TECH. The Vehicle shall use reasonable efforts to
obtain non-recourse debt financing for 60% to 75% of the capital requirements
and start-up expenses for the Initial Project, in accordance with the
development budget and timetable to be set out in the Study.

7.       SUBSEQUENT INTEREST AND FUNDING. Should GRAPH-TECH make a Development
Decision, GRAPH-TECH shall be entitled to and Mazarin shall hold in escrow for
subsequent transfer to GRAPH-TECH an additional thirty-five percent (35%)
interest (the "Subsequent Interest") in the Vehicle. The parties shall use a
method of transfer having regard to the tax implications to GRAPH-TECH and
Mazarin. Mazarin shall forthwith transfer an additional share of the Subsequent
Interest to GRAPH-TECH in consideration for each of GRAPH-TECH'S Remaining
Equity Financing (as defined below) contributions and in proportion to the
amount of each such contribution relative to GRAPH-TECH's portion of the
Remaining Equity Financing. For purposes of the transfer of the Subsequent
Interest, GRAPH-TECH'S portion of the Remaining Equity Financing shall be that
amount established in the feasibility study. Any cost overruns which require
additional equity financing shall be split by the parties on a 60% GRAPH-TECH
/40% Mazarin basis as set out below.

         The parties will be responsible for providing in the form of equity
contributions,

                                     - 4 -
<PAGE>   6
and in accordance with the development budget and timetable, the remainder of
the financing (the "Remaining Equity Financing" or "REF") required for the
capital requirements and other start-up expenses of the Initial Project, in
excess of the Initial Project debt financing. Each party's responsibility for
the Remaining Equity Financing shall be calculated pursuant to the following
formula:

                  GRAPH-TECH Equity Financing = ((PDEC+ REF) X 60%)) - GTPDEC
                  Mazarin Equity Financing = (PDEC + REF) X 40%)) - MZPDEC

                  PDEC = GTPDEC + MZPDEC
                  REF = Remaining Equity Financing
                  GTPDEC = GRAPH-TECH Pre-Development Decision Equity
                  Contribution (net of grants and subsidies actually received by
                  GRAPH-TECH. Total GTPDEC to be capped at $3,000,000.00 and to
                  exclude all costs for research and testing in GRAPH-TECH
                  facilities not related to testing graphite from the Deposit)
                  MZPDEC = Mazarin Pre-Development Decision Equity Contribution
                  = $6,000,000.00

By way of example, based on current estimates of the required Remaining Equity
Financing (presently estimated to be $24 million) the party's obligations and
ownership interest in the Vehicle would be as follows:

<TABLE>
<CAPTION>
----------------------------------------------------------------------------------------------------------------------
Shareholder               PDEC                   Remaining Equity        Total Equity           Final Ownership
                                                 Financing (REF)         Contributed            Interest
----------------------------------------------------------------------------------------------------------------------
<S>                       <C>                    <C>                     <C>                    <C>
Mazarin                   $6 million             $7.2 million            $13.2 million          40%
----------------------------------------------------------------------------------------------------------------------
GRAPH-TECH                $3 million             $16.8 million           $19.8 million          60%
----------------------------------------------------------------------------------------------------------------------
</TABLE>

8.       TERMINATION OF PARTICIPATION IN THE VEHICLE. After the Development
Decision is made, should GRAPH-TECH elect to withdraw from further participation
in the Initial Project, fail to provide the GRAPH-TECH Equity Financing when due
(as set out in the feasibility study and/or Shareholders Agreement) or otherwise
materially breach the terms of this Memorandum and/or the agreements executed as
a result of this Memorandum, and such defaults are not cured within 30 days of
the receipt of written notice of termination from Mazarin, within 12 months of
end of the cure period, GRAPH-TECH may seek to sell its interest in the Vehicle,
subject to Mazarin's right of first refusal. The purchaser of GRAPH-TECH's
interest shall then have an additional 30 days in which to cure any material
defaults which may then exist. If GRAPH-TECH is unable to obtain a willing and
able purchaser within the 12 month period, Mazarin may require GRAPH-TECH to
transfer its interest in the Vehicle to Mazarin for a sum of $1,000,000.00 plus
60% of any Remaining Equity Financing GRAPH-TECH may have provided or
GRAPH-TECH's interest shall be diluted based on the formula set out in Section
7.

         At any time, should Mazarin elect to withdraw from further
participation in the Initial Project, fail to provide the Mazarin Remaining
Equity Financing when due (as set out in the feasibility Study and/or
Shareholders Agreement) or otherwise materially breach the terms of this
Memorandum and/or the agreements executed as a result of this Memorandum,
without cure within 30 days of the receipt of written notice of termination from
GRAPH-TECH (the "Time of

                                     - 5 -
<PAGE>   7
Termination"), Mazarin will have the choice to have its interest in the Vehicle
diluted as per the formula in article 7 or to have its interest in the Vehicle
converted to a royalty payment on the basis set out below:

-     The royalty payment will be based on the [TEXT DELETED] of [TEXT DELETED]
      that will be [TEXT DELETED] after [TEXT DELETED] and coming from the
      Initial Project, future expansion of the Initial Project and all graphite
      properties held by the Vehicle at the Time of Termination.

-     If at the Time of Termination, Mazarin has contributed none of its
      required Remaining Equity Financing, its ownership interest in the Vehicle
      shall be immediately transferred to GRAPH-TECH and replaced with a royalty
      payment equal to [TEXT DELETED] per [TEXT DELETED] of [TEXT DELETED] by
      the Vehicle (the "Pre-Contribution Payment").

-     If at the Time of Termination, Mazarin has contributed 100% of its
      required Remaining Equity Financing and elects to withdraw from
      participation in the Initial Project, its ownership interest in the
      Vehicle shall be immediately transferred to GRAPH-TECH and replaced with a
      royalty payment equal to [TEXT DELETED] per [TEXT DELETED] of [TEXT
      DELETED] by the Vehicle (the "Post-Contribution Payment").

-     If at the Time of Termination, Mazarin has contributed a part but not all
      of its required Remaining Equity Financing, its ownership interest in the
      Vehicle shall be immediately transferred to GRAPH-TECH and replaced with a
      royalty payment equal to a rate per tonne of graphite ore processed by the
      Vehicle calculated as follows.

         Royalty Rate = % of Mazarin Equity Financing actually contributed,
         multiplied by (the difference between the Pre- and Post-Contribution
         Payment plus the Pre-Contribution Payment).

The rate of all royalty payments is based on the assumption that the processed
ore shall contain [TEXT DELETED]. The percentage of graphite grade will be
determined by assaying representative head samples to the concentrator. The
royalty payment shall be adjusted proportionately for higher or lower grade and
paid monthly. The royalties contemplated in this Section are premised on the
accuracy of the 1991 Cambior feasibility study and the distribution of the
graphite flake sizes and grade as defined in that study. Should the feasibility
study to be completed in Phase Three of the Study demonstrate a graphite grade
or flake size distribution materially different than the 1991 Cambior study,
Graph-Tech shall have the right to renegotiate the terms of the royalty. For the
purpose of this paragraph, a material change shall be defined as [TEXT DELETED]
of a [TEXT DELETED] yielding less than [TEXT DELETED]% by weight of [TEXT
DELETED].

         For each new graphite deposit and or major expansion of the Initial
Project or of a new graphite deposit GRAPH-TECH will have the right to
renegotiate the terms of the royalty if the commercial plant projections of a
concentrate are yielding less than [TEXT DELETED] by weight of [TEXT DELETED].

                  The termination of either party's participation in the Vehicle
shall not affect any guarantees or other obligations of either party in respect
of the Vehicle, the party, or the other party, including but not limited to the
debt financing and the Offtake Contract between the Vehicle and GRAPH-TECH.

9.       RIGHT OF FIRST REFUSAL. Should either party, at any time after the
Development Decision has been made, wish to sell or transfer its interest in the
Vehicle, it shall grant to the

                                     - 6 -
<PAGE>   8
other party a right of first refusal as to its interest to be further defined in
the Shareholders Agreement.

10.      EQUITY INVESTMENT. Subject to prior receipt of regulatory approval, the
Equity Investment shall be made by the purchase from Mazarin, by GRAPH-TECH, or
a company to be owned by or affiliated with GRAPH-TECH, of two million
(2,000,000.00) Mazarin common shares at a price provided for in Appendix B. As
further consideration for the purchase, Mazarin shall simultaneously issue to
GRAPH-TECH one million common share purchase warrants together with the common
shares purchased. The subscription agreement in respect of the purchase (the
"Subscription Agreement") shall include the terms set out in Appendix B. Mazarin
shall use the proceeds from the Equity Investment to eliminate any rights
currently held by the Fonds d'exploration miniere du Nouveau-Quebec or its
successors and resolve any prior interest that any third party may hold in the
Deposit including, but not limited to, any prior royalty interests. Mazarin
shall provide a full release of any and all third party claims on the Deposit to
the Vehicle and GRAPH-TECH prior to the completion of Phase 1 of the Study.

11.      OFFTAKE CONTRACT. After negotiation of the Shareholders Agreement and
prior to making the Development Decision, GRAPH-TECH and Mazarin shall in good
faith commence the negotiation and settlement of the terms and conditions of the
Offtake Contract consistent with the terms and conditions set out in Appendix C.

12.      CONFIDENTIALITY AGREEMENT. The parties acknowledge that the
confidentiality agreement (the "Confidentiality Agreement") between UCAR
International Inc. and Mazarin, dated February 7, 2000, a copy of which is
attached as Appendix A, remains in force and effect in accordance with its terms
and shall apply to this Memorandum.

13.      DUE DILIGENCE AND COOPERATION. Each Party and its legal and other
advisers shall be entitled, commencing on the date hereof, to conduct a due
diligence investigation of the other party and the Deposit to include, but not
limited to legal, environmental, financial and technical due diligence. For this
purpose the investigating party will be provided: i) free access to the Deposit
and other assets or facilities relating to the Deposit at all reasonable times;
ii) access to senior management and senior management of all assets or
facilities relating to the Deposit, at all reasonable times; and iii) free
access to all documentation relating to the Deposit and the investigated party
at all reasonable times in the possession of the investigated party or its
advisors, such information to be available in a data room at its principal
office. Each Party and its legal and other advisers shall be entitled to inspect
and to receive copies of all such information.

         If at anytime prior to consummation of the Subscription Agreement
either party's diligence efforts reveal any material issue or any information,
not previously disclosed, which could prevent, hinder or substantially increase
the costs, risks or liabilities associated with the Vehicle, Deposit or
development of the Deposit, that party may terminate this Memorandum and all
related agreements without further obligation, except for reasonable replacement
costs of Mazarin's 3 ton sample supplied for Phase One of the Study and article
14-III.

         Each Party shall also cooperate with the other in respect of all
filings or other matters arising in respect of the transactions contemplated in
this Memorandum, including in relation to the Investment Canada Act (Canada) and
the Competition Act (Canada) or applicable

                                     - 7 -
<PAGE>   9
securities laws.

                                     - 8 -
<PAGE>   10
14.      REPRESENTATIONS, WARRANTIES AND COVENANTS.

I.       Mazarin hereby represents, warrants and covenants to GRAPH-TECH as
         follows:

         (a)    Other than any rights currently held by the Fonds d'exploration
                miniere du Nouveau-Quebec or its successors, Mazarin holds good,
                marketable legal title to the Ownership Interest and all rights
                necessary to fully exploit the Deposit;

         (b)    the Ownership Interest is free of any encumbrances, legal
                hypothecs, or other rights to acquire ownership interests
                subject to the hypothecs affecting the universality of the
                assets of Mazarin granted to National Bank of Canada and Fiducie
                du Quebec;

         (c)    there are no existing or, to the knowledge of Mazarin after due
                investigation, pending liabilities or obligations in respect of
                the Deposit or the Ownership Interest, including in respect of
                environmental matters, other than payments due to governmental
                authorities or work requirements in the normal course of
                Mazarin's business;

         (d)    Mazarin does not require any specific authorizations or consents
                from its shareholders or from third parties, except for
                regulatory approvals in due course, to execute the Memorandum or
                to complete the transactions contemplated hereby other than
                those authorizations already obtained;

         (e)    the Memorandum and the transactions contemplated hereby do not
                contravene Mazarin's organizational documents or any other
                material agreements in respect of which Mazarin is a party;

         (f)    there are no existing claims or, to the knowledge of Mazarin
                after due investigation, pending claims in connection with the
                Deposit or in respect of the Ownership Interest.

         (g)    Mazarin shall not sell or transfer, other than to the Vehicle,
                the Ownership Interest without the prior written consent of
                GRAPH-TECH;

         (h)    Mazarin shall not encumber or permit any encumbrances on or in
                respect of the Ownership Interest or the Deposit with the
                exception of any claims of Native Americans to the land on which
                the Deposit is located (Mazarin represents that upon its
                reasonable investigation and to the best of its knowledge no
                claimsexist as of the date hereof); and

         (i)    Mazarin shall fully settle and obtain the release of any prior
                claims on or interests in the Deposit including any interest
                that may currently exist or may arise in the future including,
                but not limited to, any royalty interest which may arise as a
                result of a change of the ownership of the Deposit or change of
                control of the Vehicle in the future

         (j)    Mazarin shall transfer the Deposit to the Vehicle free of any
                encumbrances, legal

                                     - 9 -
<PAGE>   11
                hypothec, or other rights to acquire Ownership Interest.

                                     - 10 -
<PAGE>   12
II.      Representations, warranties and Covenants by GRAPH-TECH

         (a)    GRAPH-TECH does not require any specific authorizations or
                consents from its shareholders or from third parties, except for
                regulatory approvals in due course, to execute the Memorandum or
                to complete the transactions contemplated hereby other than
                those authorizations already obtained; and

         (b)    the Memorandum and the transactions contemplated hereby do not
                contravene GRAPH-TECH's organizational documents or any other
                material agreements in respect of which GRAPH-TECH is a party.

         (c)    GRAPH-TECH does not own directly or indirectly any mining right,
                permit or option to buy mining rights or permits within 100 mile
                radius of Lac Knife.

III.     The representations, warranties and covenants contained in this
Memorandum shall survive the closing of the transactions contemplated in this
Memorandum and continue in effect until December 31, 2002 or any later date in
respect of which Extension Payments are being made pursuant to Section 5. Either
party shall defend, indemnify and hold the other party harmless from and against
any and all claims, actions, losses, damages, liabilities and costs that either
party may incur by or as a result of any breach of the representations,
warranties or covenants contained herein.

15.      ANNOUNCEMENTS. The timing and content of any public announcement
regarding this Memorandum or the transaction contemplated herein, shall be
agreed by the parties in advance, such agreement and consent to not be
unreasonably withheld. Unless otherwise agreed in writing between the parties or
required by law or the rules of any stock exchange on which the securities of
any of the parties are listed no further public announcement regarding this
Memorandum or any matters referred to herein shall be made.

16.      NOTICES. All notices shall be in writing and may be given by being
delivered or sent by facsimile or mail to the authorized address (as hereinafter
defined) of the party to whom the same may be addressed. No such notice shall be
deemed to have been given until it is actually received by facsimile or mail at
the authorized address of the party to whom it is addressed. The authorized
address of each party shall be (or such other address as the relevant party may
from time to time have specified by notice to the others):

         In the case of GRAPH-TECH:

                           UCAR Graph-Tech Inc.
                           11709 Madison Avenue
                           Lakewood, OH 44107
                           USA
                           Attention: President
                           Telecopier No.  (216) 529-3888

                  cc:      UCAR International Inc.
                           3102 West End Avenue
                           Suite 1100

                                     - 11 -
<PAGE>   13
                           Nashville, TN 37203
                           USA
                           Attention: General Counsel
                           Telecopier No.       (615) 760-7785

         In the case of Mazarin:

                           Mazarin Mining Corporation Inc.
                           116, rue Saint-Pierre
                           Quebec, Canada G1K 4A7
                           Attention: President
                           Telecopier No.  (418) 694-0331

17.      COSTS. Except as specifically provided in Appendix E, all costs and
expenses, including legal costs and disbursements, incurred in connection with
the transactions provided for in this Memorandum shall be borne by the party
that incurred them.

18.      ARBITRATION. Any dispute between the parties concerning any matter
arising under this Memorandum including, without limitation, its validity,
interpretation or performance, shall be submitted for final and binding
arbitration in accordance with the provisions of this Section. Any arbitration
hereunder shall be held at Toronto, Ontario, unless the parties otherwise agree
to hold it elsewhere. The law to be applied in connection with the arbitration
shall be the law of Ontario, including its conflict of law rules. The
arbitration shall be governed by the commercial arbitration rules of Ontario or
such other rules as the parties may agree and shall be conducted in the English
language.

19.      COUNTERPARTS. This Memorandum may be executed in counterparts, each of
which so executed shall be deemed to be an original, and such counterparts
together shall constitute one and the same instrument and shall be deemed to
bear date as of the date first written above.

20.      GOVERNING LAW. This Memorandum evidences a binding agreement between
the parties and shall be governed by and construed in accordance with the laws
of the Province of Ontario and the federal laws of Canada applicable therein.

21.      FORCE MAJEURE. If either of GRAPH-TECH or Mazarin in the case of an
obligation required to be performed by it hereunder is rendered unable wholly or
in part to carry out its obligations as a result of force majeure affecting such
party, the affected party shall forthwith give to the other party notice setting
out all the relevant particulars, whereupon the obligations of the party shall
be suspended during but no longer than the continuance of the force majeure and
such further period thereafter as shall be reasonable in the circumstances. The
party giving the notice shall use all reasonable diligence to avoid or overcome
the cause of its/their inability to carry out its/their obligations as quickly
as practicable, provided that it/they shall not be liable to settle any strike,
stoppage, work ban, "go-slow", lockout or other industrial dispute or difficulty
on terms not acceptable to it. In this Memorandum "force majeure" shall include:
(a) war, whether declared or not, revolution or act of public enemies; (1,) riot
or civil commotion; (c) strike, lockout or stoppage, work ban or restraint of
labour, "go-slow" or other industrial dispute or difficulty; (d) act of God; (e)
fire, flood, unusual severe weather, earthquake and

                                     - 12 -
<PAGE>   14
washaway; (f) act or restraint of any government or governmental or
semi-governmental authority; (g) any other cause not reasonably within the
control of the party and/or affiliate affected.

22.      CANADIAN DOLLARS. Unless otherwise specifically stated, references to
"$" or "dollars" herein shall mean Canadian dollars.

23.      ENGLISH LANGUAGE. The parties have expressly required that this
Memorandum and all documents and notices relating hereto be drafted in English.
Les parties aux presentes ont expressement exige que la presente convention et
tous les documents et avis qui y sont afferents soient rediges en anglais.

24.      ENTIRE AGREEMENT. This Memorandum, together with any agreements and
other documents to be delivered pursuant hereto, including the Confidentiality
Agreement, constitutes the entire agreement between the parties pertaining to
the subject matter hereof and supersedes all prior agreements, negotiations,
discussions and understandings, written or oral, between the parties. There are
no representations, warranties, conditions, other agreements or
acknowledgements, whether direct or collateral, express or implied, that form
part of or affect this Memorandum.

25.      FURTHER ASSURANCES. Each party shall do such acts and shall execute
such further documents, conveyances, deeds, assignments, transfers and the like,
and will cause the doing of such acts and will cause the execution of such
further documents as are within its power as any other party may in writing at
any time and from time to time reasonably request be done and or executed, in
order to give full effect to the provisions of this Memorandum.

26.      ASSIGNMENT. Neither party may assign any right, benefit or interest in
this Memorandum without the written consent of the other party, such consent not
to be unreasonably withheld, and any purported assignment without such consent
will be void. Notwithstanding the foregoing, upon notice to the other party,
either party may assign any benefit of this Agreement to an Affiliate of the
assignor without the other party's consent. Affiliate means a company that
directly or indirectly controls, is under common control with, or is controlled
by the assignor, and for the purposes hereof, a company will be deemed to
control a corporation if

                  (a) securities of the corporation to which are attached more
                  than 50% of the votes that may be cast to elect directors of
                  the specified corporation or other rights to elect a majority
                  of the directors are held, other than by way of security only,
                  by or for the benefit of the corporation, and

                  (b) the votes attached to those securities are sufficient, if
                  exercised, to elect a majority of the directors of the
                  corporation.

27.      RIGHT OF FIRST REFUSAL ON FUTURE PROPERTIES. Each party shall grant to
the Vehicle a right of first refusal (or the opportunity to acquire on the same
terms available to that party in the case of any mineral or surface right, title
or interest not presently held) in respect of any graphite properties in
addition to the Ownership Interest within a 100 mile radius of the Deposit
("Future Properties"). Should the Vehicle elect to exercise its rights with
regard to a Future Properties, the Vehicle shall reimburse the party
transferring the rights for any costs

                                     - 13 -
<PAGE>   15
incurred in identifying, proving and acquiring such Future Properties.

28.      The cost of acquiring (maximum of Can$40,000), within 100 miles of the
Deposit, new exploration and surface permits by Mazarin during the three months
prior to the execution of this Memorandum for transfer to the Vehicle as per
article 1 shall be split 60% to GRAPH-TECH and 40% to Mazarin.

IN WITNESS WHEREOF the parties hereto have executed this Memorandum of
Understanding as of the date first above written.

                                   UCAR GRAPH-TECH INC.

                                   Per:    /s/ John J. Wetula
                                           ----------------------
                                           (Authorized Signature)

                                           President
                                           ---------
                                           (Position)

                                   Per:    /s/ Terry W. Wilkinson
                                           ----------------------
                                           (Authorized Signature)

                                           Operations Manager
                                           ------------------
                                           (Position)

                                   MAZARIN MINING CORPORATION INC.

                                   Per:     /s/ J. Bonneau
                                            ---------------------
                                           (Authorized Signature)

                                           President and Chief Executive Officer
                                           -------------------------------------
                                           (Position)

                                   Per:    /s/ Marcel de Rouin
                                            ---------------------
                                           (Authorized Signature)

                                           Special Adviser
                                           ---------------
                                           (Position)

                                     - 14 -
<PAGE>   16
                                   APPENDIX A

                            CONFIDENTIALITY AGREEMENT

                             DATED FEBRUARY 7, 2000

                                   [attached]
<PAGE>   17
                            CONFIDENTIALITY AGREEMENT

         This Agreement is made this ___ day of February 2000, by and between
UCAR International Inc. and its affiliates and Mazarin Mining Corporation Inc.
and its affiliates.

         1. The recipient of confidential information ("Recipient") agrees to
maintain in confidence and not disclose to third parties, without the prior
written permission of the disclosing party, or except as otherwise permitted
herein, any information provided by the disclosing party to Recipient (whether
in oral or written form), including, but not limited to, business plans and
business prospects, financial information, sales, sales categories, operating
methods, inventory, gross margin, profit, expense or other data, reports,
surveys or similar information (hereinafter referred to as "Confidential
Information"), provided that Confidential Information which is the subject of
this Agreement (a) which is in writing shall be designated as confidential by
marking on the document that the information is "Confidential" prior to delivery
of the document to Recipient and (b) which is delivered orally by the disclosing
party to Recipient shall be identified as confidential at the time it is given
to Recipient

         2. Recipient agrees to use the Confidential Information only for the
purpose of evaluating a potential business relationship with and for the benefit
of the disclosing party and for no other purpose.

         3. The obligations of this Confidentiality Agreement shall apply to
Confidential Information disclosed prior to the date of this Agreement, provided
that such information was properly designated as "Confidential" at the time of
disclosure, as well as to that hereinafter disclosed.

         4. Notwithstanding anything in this Confidentiality Agreement to the
contrary, Recipient shall not be restricted from using or required to keep
confidential any data which:

                  a)       is already available or known to the public;

                  b)       becomes available or known to the public through no
                           fault of Recipient or Recipient's agents, employees,
                           and associates;

                  c)       is already known to Recipient at the time the
                           Confidential Information was received from the
                           disclosing party as can be shown by written evidence;
                           or

                  d)       lawfully becomes available to Recipient from a third
                           party who is not known by Recipient to be under any
                           obligation of confidentiality with the disclosing
                           party or its affiliates, with respect to the
                           Confidential Information;

         5. Recipient agrees not to make additional copies of the Confidential
Information except as directly needed to perform the agreed work.

         6. Notwithstanding the above, Recipient may disclose the Confidential
Information to those of its agents and employees bound by terms of
confidentiality at least as restrictive as those setout in this agreement.
Recipient agrees that the Confidential Information will be disclosed only to
those of its employees and agents having a need to know the Confidential
Information for the purpose of evaluating the potential business relationship
with the disclosing party.

         7. The original and all copies of the Confidential Information supplied
by the disclosing party to Recipient, or made by Recipient, shall remain the
property of the disclosing party and shall be promptly returned to the
disclosing party or destroyed at the disclosing party's request, except to the
extent Recipient is required to retain a copy by law, rule or regulation.

         8. Recipient agrees to indemnify and hold the disclosing party harmless
from any loss, damages, or expenses (including reasonable attorneys' fees and
costs) caused by or arising out of Recipient's breach of its obligations under
this Confidentiality Agreement. In the event Recipient is requested, including
the request of any governmental or regulatory authority or self-regulatory
organization, or required (by oral questions, interrogatories, requests for
information or documents, subpoena, or some other process) to disclose any of
the Confidential
<PAGE>   18
Information, it is agreed that Recipient shall, to the extent practicable under
the circumstances and not prohibited by applicable law, rule or regulation,
provide the disclosing party with prompt written notice of such request(s) so
that the disclosing party shall have the opportunity to seek an appropriate
protective order and/or waive compliance by Recipient with the requirements of
this Confidentiality Agreement. In the event that such protective order or other
remedy is not obtained or that the disclosing party waives compliance with the
provisions hereof, (a) Recipient may disclose to any requesting person or
tribunal only that portion of the Confidential Information which Recipient
believes in good faith is legally required to be disclosed, and shall exercise
its best efforts to obtain assurance that confidential treatment will be
accorded such, and (b) Recipient shall not be liable for any such disclosure.

         9. No failure or delay by the disclosing party in exercising any right,
power or privilege under this Confidentiality Agreement shall operate as a
waiver thereof, nor shall any single or partial exercise thereof preclude any
other or further exercise thereof or the exercise of any right, power, or
privilege.

         10. Recipient agrees that the disclosing party, without prejudice to
any rights to judicial relief the disclosing party may otherwise have, shall be
entitled to seek equitable relief, including an injunction, in the event of any
breach by Recipient of the provisions of this Confidentiality Agreement.
Recipient also agrees that it will not seek and agrees to waive any requirement
for the securing or posting of a bond by the disclosing party in connection with
the disclosing party obtaining such injunctive relief.

         11. This Confidentiality Agreement shall be governed by, and construed
in accordance with the laws of the State of Delaware, without giving effect to
conflicts of law principles.

         12. MI obligations under this Agreement shall terminate three years
from the date of last disclosure.

         13. This Agreement shall be deemed to be the complete agreement of the
parties concerning the subject matter herein and shall supersede any prior such
agreements or the non-disclosure terms in any agreement between the parties
which may be in conflict with the terms stated herein. No amendment or
modification to this Confidentiality Agreement shall be effective unless it is
in writing, and signed by duly authorized representatives of both parties.

         IN WITNESS WHEREOF, the parties hereby indicate their acceptance of the
terms stated herein by the signatures of their authorized representatives.

MAZARIN UCAR INTERNATIONAL INC.

MAZARIN MINING CORPORATION INC.          UCAR INTERNATIONAL INC.

By:    /s/ J. Bonneau                    By:    /s/ JAL
      ----------------------------             ----------------------------
Name:      Bonneau                       Name:      J. Toner
Title:     President                     Title: Director, Strategic Materials

Date:      February 7, 2000              Date:   Feb. 7, 2000

                                     - 2 -
<PAGE>   19
                                   APPENDIX B

                         TERMS OF SUBSCRIPTION AGREEMENT

ISSUER:                    Mazarin

PURCHASER:                 GRAPH-TECH

OFFERING:                  Private placement from treasury of two million
                           (2,000,000.00) Mazarin common shares. As further
                           consideration for the private placement Mazarin shall
                           issue to GRAPH-TECH one million common share purchase
                           warrants.

PRICE:                     The Price for each share including the warrants as
                           described below, shall be $1.09 per share, payable
                           upon execution of the Subscription Agreement.

USE OF PROCEEDS:           Working capital.

LISTING:                   The shares, including the shares underlying the
                           warrants, will be listed on the Toronto Stock
                           Exchange.

RESTRICTIONS ON TRANSFER:  SUBJECT TO ALL APPLICABLE HOLD PERIODS PROVIDED FOR
                           BY THE QUEBEC SECURITIES ACT, GRAPH-TECH SHALL AGREE:

                                    a). to not sell or transfer more than
                           200,000- Mazarin common shares in any one calendar
                           month, without first providing Mazarin with the
                           opportunity to buy or arrange for the sale of those
                           shares in excess of 200,000 ("Excess Shares")
                           pursuant to the following terms:

                                    i). GRAPH-TECH shall provide Mazarin with
                           written notice stating the number of Excess Shares
                           that it intends to transfer and the minimum price;

                                    ii). Mazarin shall use reasonable efforts to
                           purchase or arrange for the sale of the Excess Shares
                           at the minimum price within 10 days following receipt
                           of the notice;

                                    iii). If Mazarin does not purchase or
                           arrange for the sale of the Excess Shares within that
                           10 day period, then GRAPH-TECH may transfer the
                           number Excess Shares setout in the notice without
                           restriction.

                                    b). If at any time the total number of
                           Mazarin shares held by GRAPH-TECH is less than
                           200,000 then all restrictions shall be extinguished
                           and this section shall cease to apply.

                                    c). GRAPH-TECH may encumber any or all
                           Mazarin
<PAGE>   20
                           shares at any time so long as the mortgagee or
                           lienholder takes the security interest subject to
                           the terms of the Subscription Agreement.

                                    d). GRAPH-TECH may assign any or all Mazarin
                           shares to an Affiliate (as defined in the Memorandum)
                           at any time so long as the assignee takes its
                           interest subject to the terms of the Subscription
                           Agreement.

CLOSING DATE:              The lesser of 45 days from the date of execution of
                           the Memorandum or as may be required by the Toronto
                           Stock Exchange. The Closing shall be conditional on
                           the results of the due diligence contemplated in the
                           Memorandum of understanding which shall be limited to
                           45 days from the date of execution of the Memorandum

COMMISSION:                None.

WARRANTS:                  Subject to regulatory approval, exercisable at any
                           time for a period of 3 years from the Closing Date at
                           an exercise price of $1.50 per share. Each Warrant
                           shall entitle the holder thereof to purchase at its
                           option at any time during a period of 3 years from
                           the Closing Date, one share at a price of $1.50 per
                           share, subject to anti-dilution provisions to be
                           included in the definitive documentation

ANTI-DILUTION:             Subject to regulatory approval, GRAPH-TECH shall have
                           the right; but not the obligation to maintain its
                           percentage equity interest in Mazarin in respect of
                           all future public or private issuances of equity of
                           Mazarin from treasury for cash. The price to
                           GRAPH-TECH shall be equal to the offer price less any
                           commission that would otherwise be payable in respect
                           of the offering. The Subscription Agreement shall
                           include normal protections against consolidation,
                           splits and certain transactions outside the normal
                           course of business.

DOCUMENTATION:             Subscription Agreement including customary
                           representations, warranties and covenants and
                           documentation required by the exchanges and
                           securities regulatory authorities. GRAPH-TECH shall
                           not be required to execute any documentation which
                           would not normally be required of a foreign-based
                           purchaser.

                                      - 2 -
<PAGE>   21
                                   APPENDIX C

                             OFFTAKE CONTRACT TERMS

SELLER:            Vehicle

BUYER:             GRAPH-TECH

MATERIAL:          Graphite delivered to GRAPH-TECH's specifications, attached
                   hereto.

TERM:              A long-term contract for the duration of the Initial Project
                   commencing with start-up of commercial production. Commercial
                   production shall be considered to commence on the date the
                   Vehicle Operations have been in continuous operation for
                   three months at 50% of its designed capacity.

QUANTITY:          Subject to "Third Party Sales" below, GRAPH-TECH to have the
                   right to the entire production of graphite.

SHIPMENTS:         As needed by GRAPH-TECH.

DELIVERY:          FOB Mine Site, in one-tonne sacks. GRAPH-TECH may also
                   request delivery to other ports, subject to Vehicle's
                   approval, not to be unreasonably withheld, it being
                   understood that any increased costs resulting therefrom will
                   be for GRAPH-TECH's account. GRAPH-TECH and the Vehicle will
                   work together to reduce shipping, packaging and handling
                   costs.

THIRD PARTY SALES: Beginning on the earlier of i) the commencement of commercial
                   production or ii) January 1, 2004, and for five years
                   thereafter (the "Initial Period"), GRAPH-TECH would agree t&
                   allow sales to third parties under the following conditions:

                   1.       GRAPH-TECH has first priority to all graphite
                            available through the Vehicle and the Vehicle shall
                            sell only capacity in excess of GRAPH-TECH's
                            requirements to third parties.

                   2.       GRAPH-TECH would be granted most favored customer
                            status among its competitors and other producers of
                            exfoliated graphite flake.

                   3.       GRAPH-TECH will work with the Vehicle to establish
                            avenues for sale of the mesh sizes not useable by
                            GRAPH-TECH.

PRICE:             During the Initial Period, prices payable by GRAPH-TECH in
                   United States Dollars shall not exceed ("Maximum Prices"):

                                      - 3 -
<PAGE>   22
                  -        US$[TEXT DELETED] per tonne for [TEXT DELETED]

                  -        US$[TEXT DELETED] per tonne for [TEXT DELETED]

                  -        US$[TEXT DELETED] per tonne for [TEXT DELETED]

                           The above Maximum Prices CIF Cleveland to be adjusted
                           to reflect a deduction of all delivery costs
                           including but not limited to freight, insurance,
                           duty, etc.. (currently estimated to be C$[TEXT
                           DELETED] per tonne) for conversion to FOB Mine site
                           prices.

                           If, after the Initial Period, world market prices are
                           at least [TEXT DELETED]% higher or lower than the
                           Maximum Prices, the parties will negotiate an
                           agreement to gradually increase or decrease the price
                           over a five year period to bring the price in line
                           with world market price less [TEXT DELETED]%. In no
                           event will the prices be increased more than [TEXT
                           DELETED]% above the Maximum Prices before December
                           31, 2020.

PAYMENT TERMS:             Net 30 days or as otherwise agreed.

OTHER DEPOSITS:            The Vehicle will agree to extend the contract to
                           cover any other deposits it may develop or produce
                           within 100 miles of the Deposit.

OTHER TERMS & CONDITIONS:  Graph-Tech Standard Terms and Conditions, attached.

                                      - 4 -
<PAGE>   23
                                  APPENDIX "C"

                                   ATTACHMENT

                             Natural Graphite Flake

All products shall be shipped in 1 metric ton (approximate) bulk sacks with a
14-inch diameter bottom spout. The sacks will be palletized, shrink wrapped, and
banded. The sacks and pallets will be returned on shrink-wrapped pallets for
recycling.

Each sack will be identified with grade and lot numbers. Net weight will be on
the tag for each sack.

The actual screen analysis and carbon content for each sack will be reported for
each shipment. SPC charts for sizing and carbon content will be presented
monthly.

All products will have:

                    Carbon content   [TEXT DELETED]% minimum
                    Moisture content [TEXT DELETED]% maximum

Size requirement [TEXT DELETED] are as follows:

         1.       [TEXT DELETED]                         U.S.  Standard Screens

                  [TEXT DELETED]

         2.       [TEXT DELETED]

                  [TEXT DELETED]            [TEXT DELETED]
                  [TEXT DELETED]            [TEXT DELETED]

         3.       [TEXT DELETED]

                  [TEXT DELETED]            [TEXT DELETED]
                  [TEXT DELETED]            [TEXT DELETED]

                                     - 5 -
<PAGE>   24
                                   APPENDIX D

               LEGAL DESCRIPTION OF DEPOSIT AND ADDITIONAL PERMITS
                         COLLECTIVELY REFERRED TO AS THE
               OWNERSHIP INTEREST TO BE TRANSFERRED IN THE VEHICLE

1.       The Deposit which includes mining rights, subject to exclusion in
         Article 3 below, for the area shown and surrounded by a heavy black
         line on Fig. 2 and described as follows:

         (i)      covered by the claims number 4660-313, 4660-303, 4660-292,
                  4660-275, 4660-241, 4660-234, 4660-235, 4660-312, 4660-302,
                  4660-291, 4660-274, 4660-263, 4660-252, 4660-233, 4537-393,
                  4537-394, 4660-311, 4660-301, 4660-285, 4660-273, 4660-262,
                  4660-251, 4660-232, 4537-395, 4537401, 4660-305, 4660-295,
                  4660-284, 4660-272, 4660-261, 4660-245, 4660-231, 4537402,
                  4537403, 4537-404, 4660-304, 4660-294, 4660-283, 4660-271,
                  4660-255, 4660-244, 4660-225, 4537-405, 4735-351, 4735-352,
                  4735-353, 4660-293, 4660-282, 4660-265, 4660-254, 4660-243,
                  4660-224, 4660-222, 4537-354, 4537-355, 4537-361, 4660-281,
                  4660-264, 4660-253, 4660-242, 4660-223, 4660-221, 4537-362,
                  4537-363, 4537-364, 4660-171, 4537-365, 4537-371, 5192-764,
                  and

         (ii)     the Pending Mining Exploration Permit immediately south of
                  claim 5192-751 and north of claim 5192-764, but excluding the
                  area east of the east edge of the lake, and

         (iii)    the north portion of Lac Knife and the area included between
                  the lake and the claims 4660-235,4537-394 and 4537401.

2.       Additional Permits

                  The Additional Permits consist on the rights to explore only
                  for graphite and mine only graphite and associated minerals
                  and metals contained in economical graphite deposits in the
                  following areas:

         (i)      claims 5192-739, 5192-740, 5192-741, 5192-744, 5192-743,
                  5192-742, 5192-745, 5192-746, 5192-747, 5192-750, 5192-749,
                  5192-748, 5192-751, 5192-752, 5192-753, 5192-754, 5192-757,
                  5192-756, 5192-755, 5192-758, 5192-759, 5192-760, 5192-763,
                  5192-762, 5192-761, 5192-765, 5192-766, 5192-767, 5192-768,
                  5192-770, 5192-769 shown on fig. 1 and 2;

         (ii)

                  -        mining Exploration Permit #1512 (shown on fig. 1),
                           but excluding the portion included in the Deposit and
                           as shown in article 1 above;

                  -        all Pending Mining Exploration Permits not included
                           in the Deposit and as shown on fig. 1 and 2;

                  -        all other Pending Mining Exploration Permits within
                           100 miles of the deposit and applied for by Mazarin
                           before execution of this Memorandum
<PAGE>   25
                           of Agreement;

         (iii)    the Pending Surface Minerals License shown on PRS location
                  maps (figure 3) and not included in the Deposit.

3.       Exclusion - Rights not transferred in the Vehicle

         It is understood that in the areas covered by the Deposit and by
         Additional Permits, Mazarin retains all exploration and mining rights
         for all minerals and metals except graphite and minerals and metals
         inside mining areas of known economical graphite deposits.

4.       Rights held by the Fonds d'exploration miniere du Nouveau-Quebec

         On June 24, 1987, Mazarin entered into an agreement with Le Fonds
         d'exploration miniere du Nouveau-Quebec Inc. (le <<Fonds>>) regarding
         the exploration and the development of mining properties, including the
         deposit. According to this agreement, each party will acquire undivided
         rights in the mining properties in accordance with the amounts invested
         for the development of such properties. However, if the undivided
         rights of a party become less that 10%, then the undivided rights of
         such party will be transferred to the other party. in return, the party
         which received the undivided rights shall pay to the other party a
         royalty of 1% of the net profit from the commercial exploitation of the
         mining properties for each 1% individed rights transferred.

         To fund its joint investment with Mazarin, the Fonds entered, on March
         28, 1990, into an agreement with the Ministere de l'E'nergie et des
         Ressources and the Office de la Planification et du De'veloppement du
         Quebec. This agreement provided that the Government of Quebec may
         acquire an interest in the mining properties acquired by the Fonds.

         Mazarin intends to settle and obtain the releases of any prior claims
         or interests in the Deposit.

                                     - 2 -
<PAGE>   26
                                   APPENDIX E

                                    TIMETABLE

Phase One - pre-evaluation stage

1.       Mazarin shall make available to GRAPH-TECH an approximately 3 ton
         sample of existing, Mazarin held natural graphite flake. Sample
         specification: approximately one-third of the sample is to be [TEXT
         DELETED]; one-third of the sample to be [TEXT DELETED]; and one-third
         of the sample to be [TEXT DELETED]. Carbon content of the samples to be
         as is in the existing material SAMPLE AVAILABLE WITHIN 7 DAYS OF
         EXECUTION OF THIS MEMORANDUM.

2.       GRAPH-TECH completes testing of sample material. APPROXIMATE COMPLETION
         DATE: 8-15-00.

PHASE TWO - bulk sample stage

1.       GRAPH-TECH receives a minimum of 30 tons each of "run of mine": [TEXT
         DELETED]; [TEXT DELETED]; [TEXT DELETED] natural graphite flake. Carbon
         content of the bulk samples to be [TEXT DELETED] minimum, average of
         [TEXT DELETED]. All product generated in producing these samples is
         included in product shipped to GRAPH-TECH. Receipt by 1-1-01.

2.       GRAPH-TECH completes testing of bulk sample. Approximate completion
         date: 4-1- 02.

PHASE THREE - feasibility study

1.       Feasibility study shall mean a study of such detail and scope as to be
         acceptable to a bank or other financial institution for the purpose of
         providing financing for the establishment and carrying out of the
         proposed operations.

2.       APPROXIMATE COMPLETION DATE: 12-31-02.
<PAGE>   27
                                   SCHEDULE A
                       TO THE MEMORANDUM OF UNDERSTANDING
                            MADE AS OF APRIL ___,2000
                   BETWEEN UCAR GRAPH-TECH INC. ("GRAPH-TECH")
                 AND MAZARIN MINING CORPORATION INC. ("MAZARIN")

                       SHAREHOLDERS AGREEMENT - TERM SHEET

The parties to the Memorandum of Understanding acknowledges that the
Shareholders Agreement for the Vehicle, to be executed between them upon
completion of Phase I of the Study, shall include, without limitation, the
following elements:

MISSION OF THE VEHICLE

GRAPH-TECH shall be the long term preferred customer of the Vehicle. The Vehicle
will operate on a sound commercial basis as a profit centre, and will pursue
other business opportunities which may include the exploration for and the
mining of graphite around Lac Knife in order to increase graphite production and
sales for the benefit of its shareholders.

BOARD OF DIRECTORS AND COMMITTEE OF THE VEHICLE AND ITS SUBSIDIARIES

-        Board of five (5) members;

-        initial representation to the Board to be allocated as follows: three
         (3) directors to be designated by Graph-Tech and two (2) directors to
         be designated by Mazarin. Should either party's interest be diluted or
         terminated pursuant to the Memorandum of Understanding, that party's
         representation to the Board shall be redistributed on a proportional
         basis to reflect the number of voting shares of each party Each party
         shall retain a minimum of one (1) member so long as it retains a
         minimum of a 10% equity interest in the Vehicle; and

-        minimum number of one (1) meeting per quarter.

ASSIGNMENT OF INTEREST

No party may assign its interest in the Vehicle without either the prior consent
of the other party or in accordance with the right of first refusal or as
otherwise provided for in the Shareholders Agreement. No consent will be
required for an assignment by a party of its participation in the Vehicle in
favour of an affiliate (as such term is defined in the Memorandum of
Understanding).

EQUITY FUNDING PREEMPTIVE RIGHT

Each party shall contribute to the equity of the Vehicle as per the terms of the
Memorandum of Understanding. Thereafter, each party shall have the right to
subscribe in preference to any other person to any new issue of shares (over and
above their Remaining Equity Financing obligations) in proportion of their
participation in the equity of the Vehicle at such time.
<PAGE>   28
RIGHT OF FIRST REFUSAL

A party may not transfer, cede or otherwise assign its participation in the
Vehicle without having previously offered within and subject to an agreed
decision period, said participation to the other party on the equivalent terms
and conditions as those contained in the proposed transfer, cession or
assignment.

CONDUCT OF BUSINESS

Each of the following decisions shall only be approved by the vote of a special
majority [75%] of the members of the Board, namely:

-        the sale or other disposal of any material assets of the Vehicle;

-        the filing of a notice of intention, of a proposal or of any assignment
         of assets of the Vehicle or any other act done by the Vehicle under any
         law with respect to bankruptcy or insolvency, including the nomination
         of a trustee or a receiver to the assets of the Vehicle as well as any
         decision relating to the winding-up or dissolution of the Vehicle;

-        a material change in the mission of the Vehicle or the moving of the
         head office of the Vehicle or of its principal place of business
         outside of the Province of Quebec;

-        the execution of any contract with a party who is related to the
         Vehicle or to any of the parties with the exception of the Offtake
         Contract with Graph-Tech or its affiliate; and

-        generally, any operation or transaction outside the normal course of
         business of the Vehicle.

Rights to explore, develop and mine additional graphite deposits on Additional
Permits

If after 3 years from the date the Vehicle begins commercial production, or less
than 3 years if the Vehicle has a positive cash flow, the Vehicle determines
that it is not interested in exploring for and or developing another graphite
deposit, so long as Mazarin maintains a 10% equity interest in the Vehicle,
Mazarin will have the right to proceed on its own or with a partner on any land
covered by Additional Permits (wholly outside the Deposit). In such case,
Mazarin will not have to pay consideration to the Vehicle for Additional
Permits.

Mazarin shall keep the Vehicle's Board of directors apprised of all reports
concerning progress on the exploration, development and feasibility study.

At any time, but not later than three months after completion of a feasibility
study (as per Phase Three of the M.O.U.) on the New Deposit, the Vehicle will
have the following choices:

1.       The Vehicle may require Mazarin to transfer the New Deposit back to the
         Vehicle and the Vehicle shall pay to Mazarin a price to repurchase the
         rights in the New Deposit based on the following formula:

         $2 million for the first $1 million expended by Mazarin on exploration
         and development for graphite on all the Additional Permits, plus $3
         million for the next $1 million expended and plus $5 for each
         additional dollar expended in excess of $2 million; or to

                                     - 2 -
<PAGE>   29
2.       let Mazarin proceed to production if it so wishes (on its own or with a
         partner) and in exchange Graph-Tech would acquire a right to purchase
         at market price all graphite produced from the New Deposit.

PIGGY-BACK RIGHTS

Should a party receive an offer to sell its interest in the Vehicle to a third
party which would result in a change of control of the Vehicle, the other party
may require, rather than exercising its right of first refusal, the sale of its
participation in the Vehicle to said third party on the same terms and
conditions than the one contained in the offer of said third party.

COMPULSORY SALE

Should a party become bankrupt or insolvent or benefits from the protection of
any law relating bankruptcy or insolvency, that party shall grant an irrevocable
option to the Vehicle or the other party, as the case may be, to purchase all of
its participation in the Vehicle at a price equal to its book value at such
time.

As otherwise provided in the Memorandum of Understanding.

CONVERSION OF MAZARIN PARTICIPATION INTO A ROYALTY PAYMENT

As per the terms of the Memorandum of Understanding.

DISPUTE RESOLUTION

Provisions to be similar to the provisions of the Memorandum of Understanding.

OTHER PROVISIONS

Usual terms and conditions of a shareholders' agreement including provisions for
the delivery of financial information on a regular basis to the shareholders.

                                     - 3 -

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