BINDING HEADS OF AGREEMENT


THIS HEADS OF AGREEMENT MADE EFFECTIVE AS OF THE 28TH DAY OF SEPTEMBER, 1999.


BETWEEN:

COLUMBIA RIVER RESOURCES INC. (hereinafter referred to as CRVV) a Limited
and Public Company incorporated in the State of Nevada, USA
Withits head office located at 304 - 856 Homer Street
Vancouver, British Columbia, Canada
Or its assigns

AND

AYACO (GHANA) LIMITED  (Hereinafter referred to as Ayaco ) a limited and
private company incorporated in the Republic of Ghana
P.O. Box 5999, Accra-North
Ghana.

WHEREAS, Ayaco holds a 100% interest in the Tanoso Reconnaissance
License (the License) subject to a 10% carried net profit interest to the
Government of Ghana
- ----------------------------------------------------------------------

WHEREAS, CRVV wishes to acquire a 100% working interest (the Interest) from
Ayaco subject to a 10% net profit interest payable to Ayaco and to the
additional 10% payable to the Government of Ghana.

NOW, THEREFORE, in consideration of the mutual covenants set forth herein, the
parties agree as follows:

THE OPTION

In exchange for a nonrefundable 100,000 common shares of CRVV, with a deemed
     value of $0.15 per share all payable to Ayaco (the "Option Payment"), Ayaco
     hereby grants to CRVV the following (hereinafter referred to as the
     "Option").

     An exclusive three (3) month due diligence period the "Due Diligence
        Period") during which CRVV may investigate all aspects of the licenses
        and the corporate matters of Ayaco so far as these matters may affect
        this agreement;

     The right, on or before the end of the Due Diligence Period, to make an
        Election  (the Election) to acquire the Interest by notifying Ayaco in
        writing, at the address shown above of such election by December 31,
        1999.

Immediately upon the election by CRVV Ayaco shall register or failing this
     authorizes CRVV to register this agreement against title held in respect
     to the mineral title for the License acquired as a result of the Election.

EARN IN

In the event CRVV makes the Election, as set forth above in Paragraph A(1)(b),
        CRVV shall have the right to earn the Interest in the Licence by making
        the following payments and funding expenditures



        (hereinafter referred to as the "Earn-in Expenditures").

     CRVV shall assume all funding obligations for the further development of
        the Licence shown in Schedule 1 attached hereto: and

     CRVV and its joint venture partners, if any, commit to the program of
        Earn-in-Expenditures as outlined in the report by CME & Co. dated
        September, 1999 and attached here to as Schedule 11.

     c)  CRVV, shall issue to Ayaco, 500,000 shares in the capital of CRVV upon
         each of the first anniversary of and on the date of Election for a
         total of 1,000,000 shares in the capital of CRVV.

     The Option Payment, and any other payments incurred by CRVV since January,
         1999 relating to the Option or this Heads of Agreement, shall be
         applied towards the Earn-in Expenditures.

     Following the completion of items above CRVV shall have earned a 100%
         working interest on the Licence subject to a 10% net profit interest
         payable to Ayaco and 10% payable to the Government of Ghana.

CONDITIONS

     All work is to be carried out by CME & Company, of Guernsey, the Channel
         Islands.

     The management of Ayaco shall be responsible for facilitating the work of
         CRVV and CME & Company ensuring Ayaco is maintained in accordance with
         the laws of Ghana otherwise they will forfeit all rights to the
         License to CRVV.

     CRVV may terminate this Heads of Agreement during the Option Period or the
         Earn-in Period by giving written notice to Ayaco at the address
         specified herein. In the event CRVV terminate this Heads of Agreement
         pursuant to this paragraph, CRVV shall not be further obligated in any
         way than to deliver to Ayaco all information pertinent to the Earn-in
         Expenditures.

REPRESENTATIONS AND WARRANTIES

Ayaco represents to CRVV, and acknowledge that CRVV is relying on such
     representations and warranties, as follows;

     This Heads of Agreement has been duly authorized and delivered by Ayaco
         and is a valid and binding obligation of Ayaco.

     Ayaco is incorporated and validly existing under the laws of the
         Republic of Ghana.

     Ayaco warrants that they have full title to the License as set forth in
         Schedule 1 attached hereto, and that Ayaco will retain all titles to
         the said Licence during the term of this Agreement or until such title
         is transferred to CRVV; and

CRVV hereby represents to Ayaco and acknowledges that Ayaco is relying on such
     representations and warranties:

     This Heads of Agreement has been duly authorized, executed and delivered
         by CRVV and is a valid and binding obligation of CRVV; and

     CRVV is duly incorporated and validly existing under the laws of the
         State of Nevada, in the United States of America.






E.   MISCELLANEOUS

     1.  This Heads of Agreement shall supercede any and all other agreements
         between the parties relating to the matters set forth herein.

     2.  Any amendments to this Heads of Agreement shall be in writing signed
         by all of the parties hereto.

     3.  This Heads of Agreement may be executed in any number of counterparts,
         each of which will be deemed an original, but all of which together
         will constitute one and the same instrument.

     4.  This and all subsequent Agreements are governed by the laws and
         exclusive jurisdiction of England.

     5.  The Heads of Agreement shall inure to the benefit of, and be binding
         upon, the partied hereto and the respective successors and assigns.

F.   FINAL AGREEMENT

     1.  This Heads of Agreement shall be succeeded by a formal agreement, which
         incorporates all of the terms, conditions and interests and only the
         terms, conditions and interests contained herein and incorporates
         language such that all legal and regulatory requirements precedent in
         all appropriate and effective jurisdictions of the respective parties
         of this Heads of Agreement are satisfied.

In witness whereof the parties hereto have executed and delivered this Heads of
Agreement as of the 28th day of September, 1999.


COLUMBIA RIVER RESOURCES INC.

/s/ Robert R. Ferguson                        /s/ Alex Adjei
- -------------------------------              --------------------
Robert R. Ferguson                           Alex Adjei
President                                    Ayaco (Ghana) Limited
                                             Director


                                             /s/ Alhaji Nantogma Abudulai
- -------------------------------              ---------------------

                                             Alhaji Nantogma Abudulai
                                             Ayaco (Ghana) Limited
                                             Director




SCHEDULE 1

(INCLUDE MAP OF AREA OF INTEREST)

SCHEDULE 11
Include report by CME & Co. dated September, 1999


PHASE 1

In phase 1, all corner  beacons  will be surveyed  for the  Special  Prospecting
Licenses,  Prospecting Licenses and Mining Leases.  Detailed mapping will locate
all existing workings and these will be sampled where possible.  Considering the
marked  anisotropic  nature of the grade,  which  varies in the  horizontal  and
vertical  planes and the layered  nature of  mineralization  within the albitite
zones,  selected  deposits  in the area will be further  investigated  through a
program of pitting.  Targets  selected in Phase 1 include the  pegmatites at the
- ------------------------- Occurrences. A summary of pitting in these areas along
a pit line  separation  of 20 metres with a pit spacing of 10 metres is given in
Table 14.

Table 14: Phase 1 Work Program: Pitting: -------------- Tantalite Field

(insert table)

Results from Phase 1 will be used to commence and manage a resource database.
The total cost for Phase I is US$------------.

PHASE II

Phase II will entail  preliminary  resource  evaluation of the most  prospective
target to a depth of ----- metres  vertically  below  surface,  Considering  the
- -------- Occurrence as the potential target,  diamond drillholes will be drilled
on a three hole fence with the inclination guided by the pit results. Each fence
has an  estimated  length of -----  metres  and  fences  will  initially  have a
separation of ----- metres with a total of ------ metres drilling.  Although the
mineralization  is  "disseminated"  the  tantalite  is  usually   coarse-grained
therefore  HQ core  will be  required  to  minimize  nugget  effects.  The total
estimated cost for Phase II including preliminary metallurgical separation tests
and updating of the resource database is US$----------.

PHASE III

Subject to  the variability in  grade, Phase III will lead to infill drilling on
50 Metre spaced lines with establishment of a Pre-feasibility report. This Phase
is estimated to cost US$------------.