PLEDGE AGREEMENT

                  PLEDGE AGREEMENT,  dated as of November 25, 1998 (this "Pledge
Agreement"),  between  Cherokee  Mining  Company  Inc.  ("Cherokee"),  a Wyoming
corporation, and Grant Reserve Corporation ("Grant"), a Nevada corporation.

                              W I T N E S S E T H:

                  WHEREAS,  Cherokee  and Grant have  entered  into that certain
asset sale agreement (the "Asset Sale  Agreement") of even date herewith,  under
which Cherokee has acquired (i) 7,620,000  shares of Common Stock, no par value,
in Madison Mining Corporation, a Montana corporation ("Madison") and (ii) 36,388
of shares of Common Stock, no par value, in Gold King Mines  Corporation  ("Gold
King") (collectively, the "Pledged Shares");

                  WHEREAS,  as part  of the  consideration  for the  sale of the
Shares  under the Asset  Sale  Agreement,  Cherokee  has agreed to pay Grant the
principal sum of SIX HUNDRED  THOUSAND DOLLARS  ($600,000),  which obligation is
evidenced by a certain promissory note of even date herewith, (the "Note");

                  WHEREAS,  to secure  its  obligations  under  the  Asset  Sale
Agreement and the Note, Cherokee has agreed to (i) pledge to Grant, and grant to
Grant,  a security  interest  in, the Pledged  Securities  and (ii)  execute and
deliver this Pledge Agreement.

NOW THEREFORE, the parties hereto agree as follows:

                  1.       Pledge and Grant of Security Interest.

                  Cherokee  hereby  pledges  to  Grant,  and  grants  to Grant a
continuing  security  interest  in and to all of  Cherokee's  right,  title  and
interest in (i) the  Pledged  Shares,  (ii) the  certificates  representing  the
Pledged Shares and (iii) all products and proceeds of any of the Pledged Shares,
including,  without  limitation,  all dividends,  interest,  principal payments,
cash, options, warrants, rights,  instruments,  subscriptions and other property
or proceeds from time to time received,  receivable or otherwise  distributed or
distributable  in  respect  of or  exchange  for the any of the  Pledged  Shares
(collectively (i), (ii) and (iii), the "Collateral") as collateral  security for
the prompt and complete payment and performance due (whether at stated maturity,
by acceleration or otherwise) of the Obligations.

                  As used herein, "Obligations" means, collectively,  the unpaid
principal  and  interest,  if any,  on the Note and all  other  obligations  and
liabilities of Cherokee, whether direct or indirect, which may arise under or in
connection with the Asset Sale Agreement, the Note and this Pledge Agreement.




                  2.       Delivery of the Collateral

                  (a) All  certificates  evidencing  the Pledged Shares shall be
delivered to and held by Grant  pursuant  thereto and shall be in suitable  form
for transfer by delivery,  or shall be accompanied by duly executed  instruments
of transfer  in blank,  all in form and  substance  reasonably  satisfactory  to
Grant.

                  (b) On the  date  hereof,  Cherokee  shall  take  all  actions
necessary in order to transfer each item of the  Collateral to Grant in a manner
sufficient  to create in favor of Grant,  a perfected  first  priority  security
interest  in the  Collateral.  In the  event of any  change in  applicable  law,
Cherokee shall promptly take such action as may be required in order to continue
Grant's  security  interest  in the  Collateral  as a perfected  first  priority
security interest and Grant shall cooperate with Cherokee in any such action.

                  3.       Representations and Warranties

                  Cherokee hereby represents and warrants that:

                  (a) The  execution,  delivery and  performance  by Cherokee on
this Pledge  Agreement do not  contravene,  or constitute a default  under,  any
provision of applicable law or regulation or of the certificate of incorporation
of Cherokee or of any material agreement, judgment, injunction, order, decree or
other  instrument  binding upon Cherokee or result in the creation or imposition
of any lien  encumbrance  or security  interest on or in any assets of Cherokee,
except for the security interests granted under this Pledge Agreement to Grant.

                  (b)  Upon   the   delivery   to  Grant  of  the   certificates
representing the Pledged Shares,  the pledge of the Collateral  pursuant to this
Pledge Agreement  creates a valid and perfected first priority security interest
in  and  to  the  Collateral,  securing  the  payment  and  fulfillment  of  the
Obligations  for the benefit of Grant  enforceable as such against all creditors
of Cherokee and any persons  purporting to purchase any of the  Collateral  from
the Cherokee, except as such enforcement may be limited by (i) the effect of any
applicable bankruptcy,  insolvency,  reorganization,  moratorium or similar laws
affecting  creditor's  rights  generally and (ii) general  principles of equity,
regardless of whether considered in a proceeding in equity or at law.

                  (c)  No   consent  of  any  other   person  and  no   consent,
authorization,  approval,  or other  action by, and no notice to or filing with,
any  governmental  authority  or  regulatory  body is required for the pledge by
Cherokee  of the  Collateral  pursuant  to  this  Pledge  Agreement  or for  the
execution,  delivery or performance of this Pledge Agreement by Cherokee (except
for any actions, notices, filings and notations necessary to perfect liens on or
the  security  interest  in the  Collateral  created  pursuant  to  this  Pledge
Agreement).



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                  4.       Further Assurances

                  Cherokee  agrees to promptly  take such actions and to execute
and deliver or cause to be executed  and  delivered,  or use its best efforts to
procure, such stock or bond powers, proxies,  assignments,  instruments and such
other or different  writings  that may be  necessary or as Grant may  reasonably
request, all in form and substance reasonably satisfactory to Grant, deliver any
instruments  to Grant and take any other  actions that are  necessary or, in the
reasonably opinion of Grant, desirable, to perfect,  continue the perfection of,
confirm  and  assure the first  priority  of Grant's  security  interest  in the
Collateral, to perfect the Collateral against the rights, claims or interests of
third persons, and to otherwise effect the purpose of this Pledge Agreement.

                  5.       Covenants

                  Cherokee  covenants  and agrees  with Grant from and after the
date of this  Pledge  Agreement  until the  payment in full and  fulfillment  of
Obligations due and owing under the Asset Sale  Agreement,  the Note and of this
Pledge Agreement that it will not:

                  (a) (i) sell or  otherwise  dispose of, or grant any option or
warrant with respect to, any of the Collateral or (ii) create or permit to exist
any lien or encumbrance  upon or with respect to any of the  Collateral  (except
for the lien created pursuant to this Pledge Agreement) and at all times will be
the sole beneficial owner of the Collateral; and

                  (b) (i)  enter  into any  agreement  that  purports  to or may
restrict or inhibit  Grant's rights or remedies  hereunder,  including,  without
limitation, Grant's right to sell or otherwise dispose of the Collateral or (ii)
fail to pay or discharge any tax assessment or levy of any nature not later than
five days prior to the date of any  proposed  sale under any  judgment,  writ or
warrant of attachment with respect to such tax assessment or levy with regard to
the Collateral.

                  6.       Power of Attorney

                  Cherokee hereby  appoints and constitutes  Grant as Cherokee's
attorney-in-fact  to exercise to the fullest extent permitted by law, all of the
following  powers  upon and at any time  after the  occurrence  and  during  the
continuance  of a  Default  under  the Note or the  occurrence  and  during  the
continuance  of an  Event  of  Default  under  the  Asset  Sale  Agreement:  (i)
collection  of  proceeds  of any  Collateral;  (ii)  conveyance  of any  item of
Collateral to any purchaser thereof; (iii) giving of any notices or recording of
any liens under Section 4 hereto; (iv) making of any payments or taking any acts
under  Section 7 hereof and (v) paying or  discharging  taxes or liens levied or
placed upon the  Collateral,  the  legality or validity  thereof and the amounts
necessary  to discharge  the same to be  determined  by Grant in its  reasonable
discretion, and such payment made by Grant to become the Obligations of Cherokee
to Grant, due and payable immediately upon demand.  Grant's authority to execute
and give receipt for any  certificate of ownership or any document  constituting
Collateral,  transfer title to any item of Collateral,  sign  Cherokee's name on
all financing  statements  (to the extent  permitted by  applicable  law) or any
other documents reasonably deemed necessary or

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appropriate  by Grant to preserve,  protect or perfect the security  interest in
the Collateral and to file the same,  prepare,  file and sign Cherokee's name on
any  notice  of lien,  and to take any other  actions  arising  from the  powers
granted to Grant in this  Pledge  Agreement.  This power of  attorney is coupled
with an interest and is irrevocable by Cherokee.

                  7.       Grant May Perform

                  If Cherokee fails to perform any agreement  contained  herein,
Grant may itself perform,  or cause performance of, such agreement.  Grant shall
provide  written  notice to  Cherokee  or any  exercise  of rights  pursuant  to
Sections 6 or 7 hereof.

                  8.       No Assumption of Duties: Reasonable Care

                  The rights and powers  granted to Granted  hereunder are being
granted in order to preserve and protect Grant's security interest in and to the
Collateral granted hereby and shall not be interpreted to, and shall not, impose
any duties on Grant in  connection  therewith  other than  those  imposed  under
applicable  law.  Grant  agrees  to  exercise  reasonable  care in the  custody,
preservation and disposition of the Collateral.

                  9.       Indemnity

                  Cherokee shall  indemnify,  defend and hold harmless Grant and
its  directors,  officers,  agents and  employees  from and  against all claims,
actions,  obligations,  losses,  liabilities and expenses,  including reasonably
costs,  reasonable  fees and  reasonable  disbursements  of counsel  (including,
without  limitation,  the  reasonable  cost to  Grant  of  legal  counsel),  the
reasonable costs of investigations,  and claims for damages,  arising from or in
connection  with Grant's  performance of its duties or exercise of its rights or
powers  under  this  Pledge   Agreement   (other  than  such  claims,   actions,
obligations,  losses,  liabilities and expenses which result from the bad faith,
gross negligence or willful misconduct of Grant).

                  10.      Security Interest Absolute

                  All rights of Grant and security interests hereunder,  and all
obligations  of  Cherokee   hereunder,   shall  be  absolute  and  unconditional
irrespective of:

                  (a) any lack of validity or  enforceability  of the Asset Sale
Agreement or any other agreement or instrument relating thereto;

                  (b) any change in the time,  manner or place of payment of, or
in any other term of, all or any of the Obligations or of this Pledge Agreement.

                  (c) any exchange,  surrender, release or non-perfection of any
liens on any other collateral for all or any of the Obligations; or


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                  (d) to the  extent  permitted  by  applicable  law,  any other
circumstance  which might  otherwise  constitute  a defense  available  to, or a
discharge  of,  Cherokee  in  respect  of  the  Obligations  or of  this  Pledge
Agreement.

                  11.      Continuing Security Interest: Termination

                  (a) The Pledge  Agreement  shall create a continuing  security
interest in and to the Collateral and shall,  unless  otherwise  provided in the
Asset Sale  Agreement,  remain in full force and effect until the fulfillment of
and  payment  in full of all  Obligations  due and owing  under  the Asset  Sale
Agreement,  the  Note  and this  Pledge  Agreement.  At such  time  this  Pledge
Agreement  shall  terminate and Grant shall, at the written request of Cherokee,
promptly reassign and redeliver to Cherokee all of the Collateral hereunder that
has not been sold,  disposed of, retained or applied by Grant in accordance with
the  terms  of  this  Pledge  Agreement  and  the  Asset  Sale  Agreement.  Such
reassignment  and  redelivery  shall be  without  warranty  (either  express  or
implied)  by or  recourse  to  Grant,  except  as to the  absence  of any  prior
assignments or encumbrances by Grant of the Collateral or its interests therein,
and shall be at the reasonable expense of Cherokee.  This Pledge Agreement shall
be binding upon Cherokee,  its successors and assigns, and shall inure, together
with the rights and remedies of Grant hereunder, to the benefit of Grant and its
successors, transferees and assigns.

                  (b) Notwithstanding any provision in this Pledge Agreement, if
any Default under the Note or an Event of Default under the Asset Sale Agreement
occurs,  Cherokee shall use its best efforts to immediately cause Grant, to have
a perfected first priority security  interest in the Collateral.  This paragraph
shall survive the termination of this Pledge Agreement.

                  12.      Notices

                  Any  communication,  notice or demand to be given hereunder to
any party shall be duly given  hereunder if given in writing and in the form and
manner, and delivered to their address set forth in the Asset Sale Agreement, or
in such other form and manner or to such other  address  and Persons as shall be
designated  by and party hereto to each other party  hereto in a written  notice
delivered in accordance with the terms of the Asset Sale Agreement.

                  13.      Governing Law

                  THIS  PLEDGE  AGREEMENT  SHALL BE  GOVERNED BY THE LAWS OF THE
STATE OF COLORADO.

                  14.      Execution in Counterparts

                  This  Pledge  Agreement  may  be  executed  in any  number  of
counterparts,  each of which shall be an original,  but such counterparts  shall
together constitute but one and the same instrument.



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                  15.      No  Personal   Liability   of   Directors,   Officer,
                           Employees and Others

                  No  past,  present  or  future  director,  officer,  employee,
incorporator, partner or stockholder of Cherokee will have any liability for any
obligations of Cherokee  under this Pledge  Agreement or for any claim based on,
in respect of or by reason of such obligations or their creation.



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                  IN WITNESS  WHEREOF,  the  Parties  have  caused  this  Pledge
Agreement to be duly executed as of the date first above written.

                                   PLEDGOR

                                   CHEROKEE MINING COMPANY INC.


                                   By: /s/ William R. Wilson
                                       Name:  William R. Wilson
                                       Title  President

                                       Address for Notices:
                                       410 17th Street, Suite 1375
                                       Denver, Colorado 30302
                                       (303) 320-2840
                                       (303) 595-9717
                                       Attention: William R. Wilson

                                   PLEDGEE

                                   GRANT RESERVE CORPORATION

                                   By: /s/ (signature is illegible)
                                       Name:
                                       Title

                                       Address for Notices:
                                       131 University Ave., Suite 2100
                                       Toronto, Canada M5H 3M7
                                       (416) 366-2221
                                       (416) 366-7722
                                       Attention: Arnold T. Kondrat



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