<PAGE>

                                   AGREEMENT

     AGREEMENT made this 31st day of December, 1998, by and between Tabor 
Resources Corporation, a Minnesota corporation, hereinafter referred to as 
"Seller" whose address is 5198 West 76th Street, Edina, Minnesota 55439 and 
Conjecture Silver Mines, Inc., an Idaho corporation, hereinafter referred to 
as "Buyer," whose address is 905 North Pines Road, Spokane, Washington 99206.

     WHEREAS, Seller owns certain patented and unpatented mining claims and 
leases located in the Alder Gulch area of the Virginia City Mining District 
in southwestern Montana as set forth in "Exhibit A" attached hereto and 
referred to herein as the "Properties;" and,

     WHEREAS, the Buyer has offered to purchase the Properties from the 
Seller,

     NOW THEREFORE, IT IS AGREED AS FOLLOWS:

     1.   Subject to receipt of the purchase price set forth below, Seller 
shall sell, transfer, assign and convey to Buyer, and Buyer shall purchase 
from Seller, the Properties, together with any easements, rights of way and 
water rights, if any, associated therewith. The documents used to convey the 
Properties are attached hereto as "Exhibit B."

     2.   Buyer will pay to Seller the sum of twenty thousand dollars 
($20,000). Payment to be made to Seller's account no. 1731 0019 9657 at First 
Bank, 601 Second Avenue South, Minneapolis, Minnesota 55402 via wire transfer 
not later than December 31, 1998.

     3.   Upon Seller being notified by First Bank that said funds have been 
deposited to its account, Seller will cause executed copies of Exhibit B to 
be delivered to Buyer by Seller's attorney, Conrad C. Lysiak.

     4.   Seller warrants that it has good and marketable record title to one 
hundred percent of the undivided interest in the patented mining claims 
specified in Exhibit A, and all such patented mining claims are owned free 
and clear of any and all liens, mortgages, security interests, pledges, 
charges, assignments, deeds of trust, encumbrances, options, tax liens, 
mechanic's liens, materialmen's liens, or other charges or encumbrances of 
any kind. Seller makes no representation or warranty with respect to all or 
any of the unpatented mining claims, the portion of a patented placer claim 
or the lease specified in Exhibit A.

     5.   To Seller's knowledge, other than the mining leases identified in 
Exhibit A, the Properties are not subject to any leases nor are there any 
royalties burdening the Properties. For purposes thereof, the term 
"royalties" shall mean all amounts payable as a share of the product or 
profit from property, and includes, without limitation, production payments, 
minimum royalties, overriding royalties and bonus payments.

<PAGE>

     6. To Seller's knowledge, Seller is not presently obligated under any 
purchase or sale agreements, refining agreements, production agreements, 
production payment agreements, operation agreements, participation 
agreements, security agreements or any other agreements to make future 
deliveries of production attributable to the Properties.

     7.   Seller also grants a first right of refusal to the Buyer to acquire 
the properties described in "Exhibit C" attached hereto. In the event that 
Seller intends to sell said properties, Seller will notify Buyer in writing 
of such intention to sell; advise Buyer of the selling price; and, Buyer will 
have ten days to notify Seller of this intention to acquire such properties. 
If payment for said properties is not made by Buyer to Seller within twenty 
days thereof, Buyer's right to buy said properties will terminate and Seller 
may dispose of the same without further notice to Buyer.

     8.   Buyer agrees to indemnify and hold Seller safe and harmless from 
any and all claims or causes of action which result from Buyer's operation of 
the Properties.

     9.   Jurisdiction and venue of any action which is initiated by either 
party to this Agreement will be in the state courts of Madison County, State 
of Montana. A prevailing party in such action will be entitled to recover his 
costs including a reasonable attorney's fee.

     10.  The law governing the terms of this Agreement will be that of 
Montana.

     11.  Facsimile signatures may substituted for original signatures.

     IN WITNESS WHEREOF, the parties have executed this Agreement, the day 
and year first above written.


                                      TABOR RESOURCES CORPORATION


                                      BY:    /s/ Chuck Reese
                                         -------------------------------
                                            Chuck Reese, President, COO


                                      CONJECTURE SILVER MINES, INC.


                                      BY:    /s/ William Campbell
                                         --------------------------------
                                             William Campbell, President


<PAGE>

                                   EXHIBIT A
    UNPATENTED MINING CLAIMS CONTROLLED BY TABOR RESOURCES CORPORATION
                         SUBSIDIARY OF TECH SQUARED, INC.
                             MADISON COUNTY, MONTANA


<TABLE>
<CAPTION>

  Mining         Claim
 Serial #        Number     Name of Claim or Site     Date of Location     Location of Claim
----------     ----------   ---------------------     -----------------    -------------------
<S>            <C>          <C>                       <C>                  <C>                
  MTMMC         175329         Don-A-Vera No. 2       February 25, 1990     T.6S.,R.3W.,35N1/2
  MTMMC         175330         Don-A-Vera No. 3       February 25, 1990     T.6S.,R.3W.,26S1/2
                                                                            T.6S.,R.3W.,35N1/2
                                                                                              
  MTMMC         175332         Don-A-Vera No. 7       February 25, 1990     T.6S.,R.3W.,35N1/2
  MTMMC         175333         Jayhill Lode           February 25, 1990     T.6S.,R.3W.,35NE1/4
  MTMMC         175334         Jayhill No. 1          February 25, 1990     T.6S.,R.3W.,35N1/2
  MTMMC         175335         Jayhill No. 2          February 25, 1990     T.6S.,R.3W.,36 ALL
  MTMMC         175336         Jayhill No. 3          February 25, 1990     T.6S.,R.3W.,36S1/2
  MTMMC         175337         Jayhill No. 4          February 25, 1990     T.6S.,R.3W.,36S1/2
  MTMMC         175338         Jayhill No. 5          February 25, 1990     T.6S.,R.3W.,36E1/2
  MTMMC         175339         Jayhill No. 6          February 25, 1990     T.6S.,R.3W.,36SE1/4
  MTMMC         175340         Jayhill No. 7          February 25, 1990     T.6S.,R.3W.,35SE1/4
  MTMMC         175341         Jayhill No. 8          February 25, 1990     T.6S.,R.3W.,35NW1/4
  MTMMC         175342         Jayhill No. 9          February 25, 1990     T.6S.,R.3W.,35NE1/4
  MTMMC         175343         Jayhill No. 10         February 25, 1990     T.6S.,R.3W.,36NE1/4
  MTMMC         175344         Jayhill No. 11         February 25, 1990     T.6S.,R.3W.,35NE1/4
  MTMMC         175345         Jayhill No. 12         February 25, 1990     T.6S.,R.3W.,36NE1/4
  MTMMC         175346         J/M Lode               February 25, 1990     T.7S.,R.3W.,1NW1/4
  MTMMC         175347         J/M No. 1              February 26, 1990     T.7S.,R.3W.,1NW1/4
  MTMMC         175348         J/M No. 2              February 26, 1990     T.7S.,R.3W.,1NW1/4
  MTMMC         175349         J/M No. 3              February 26, 1990     T.7S.,R.3W.,1N1/2
  MTMMC         175350         J/M No. 4              February 26, 1990     T.7S.,R.3W.,1N1/2
  MTMMC         175351         J/M No. 5              February 26, 1990     T.7S.,R.3W.,1N1/2
                                                                                             
  MTMMC         175374         Keyhole Lode           February 26, 1990     T.7S.,R.3W.,1SE1/4
  MTMMC         175375         Keyhole No. 1          February 26, 1990     T.7S.,R.3W.,1SE1/4
                                                                            T.7S.,R.3W.,12NE1/4
                                                                                               
  MTMMC         175376         Keyhole No. 2 Lode     February 26, 1990     T.7S.,R.3W.,1SE1/4
  MTMMC         175377         Keyhole No. 3 Lode     February 26, 1990     T.7S.,R.3W.,1S1/2
                                                                                             
  MTMMC         175378         Butcher Lode           February 26, 1990     T.7S.,R.3W.,1 ALL
  MTMMC         175379         Butcher No. 3 Lode     February 26, 1990     T.7S.,R.3W.,1E1/2
  MTMMC         175380         Timboy Lode            February 26, 1990     T.7S.,R.3W.,1SE1/4
  MTMMC         175381         Timboy Fraction        February 26, 1990     T.7S.,R.3W.,1S1/2
  MTMMC         175382         Timboy No. 1 Lode      February 26, 1990     T.7S.,R.3W.,1SE1/4
  MTMMC         175383         Nellie Bly Fraction    February 26, 1990     T.7S.,R.3W.,12N1/2
  MTMMC         175384         "New Winnetka"         February 26, 1990     T.7S.,R.3W.,1S1/2
  MTMMC         175385         Monidah Lode           February 26, 1990     T.7S.,R.3W.,1SW1/4
  MTMMC         175386         Malta No. 2            February 26, 1990     T.7S.,R.3W.,1SW1/4
                                                                            T.7S.,R.3W.,12NW1/4
                                                                                              
  MTMMC         175387         St. John Extension     February 26, 1990     T.7S.,R.3W.,1W1/2
  MTMMC         175388         Fortune Fraction       February 28, 1990     T.7S.,R.3W.,1SE1/4
  MTMMC         175389         Fortune Lode           February 28, 1990     T.7S.,R.3W.,12NE1/4
  MTMMC         175390         Fortune No. 1 Lode     February 28, 1990     T.7S.,R.3W.,1SE1/4
                                                                                              
  MTMMC         175401         El Fortuna Lode        February 28, 1990     T.7S.,R.2W.,7NW1/4
                                                                            T.7S.,R.3W.,12NE1/4
                                                                                               
  MTMMC         175402         El Fortuna No. 1       February 28, 1990     T.7S.,R.2W.,6SW1/4
                                                                            T.7S.,R.2W.,7NW1/4
                                                                            T.7S.,R.3W.,1SE1/4
                                                                            T.7S.,R.3W.,12NE1/4


<PAGE>

  MTMMC         175407         El Fortuna No. 5       February 28, 1990     T.7S.,R.2W.,6SW1/4
                                                                                              
  MTMMC         175410         Tabor Fraction         February 25, 1990     T.6S.,R.3W.,35W1/2
                                                                                              
  MTMMC         175414         Tabor No. 4            February 25, 1990     T.6S.,R.3W.,35SE1/4
  MTMMC         175415         Tabor No. 5            February 26, 1990     T.6S.,R.3W.,35SE1/4
                                                                           T.6S.,R.3W.,36SW1/4
                                                                                               
  MTMMC         175416         Tabor No. 6            February 26, 1990     T.7S.,R.3W.,1SE1/4
                                                                           T.7S.,R.3W.,2NE1/4
                                                                                               
  MTMMC         175417         Tabor No. 7            February 26, 1990     T.7S.,R.3W.,1NE1/4
  MTMMC         175418         Tabor No. 8            February 26, 1990     T.7S.,R.3W.,1NE1/4
  MTMMC         175419         Tabor No. 9            February 26, 1990     T.7S.,R.3W.,1NE1/4
  MTMMC         175420         Tabor No. 10           February 26, 1990     T.7S.,R.3W.,1NE1/4
  MTMMC         175421         Tabor No. 11           February 26, 1990     T.7S.,R.3W.,1E1/2
  MTMMC         175422         Tabor No. 12           February 26, 1990     T.7S.,R.3W.,1E1/2
  MTMMC         175423         Tabor No. 13           February 26, 1990     T.7S.,R.3W.,1E1/2
  MTMMC         175424         Tabor No. 14           February 26, 1990     T.7S.,R.3W.,1SE1/4
                                                                                               
  MTMMC         175433         Tabor No. 30           February 25, 1990     T.6S.,R.3W.,28SE1/4
                                                                            T.6S.,R.3W.,35NE1/4
                                                                                               
  MTMMC         175434         Tabor No. 31           February 25, 1990     T.6S.,R.3W.,28SE1/4
                                                                           T.6S.,R.3W.,35SW1/4
                                                                                                
  MTMMC         175435         Tabor No. 32           February 25, 1990     T.6S.,R.3W.,26SW1/4
  MTMMC         175436         Tabor No. 33           February 25, 1990     T.6S.,R.3W.,26SE1/4
  MTMMC         175437         Tabor No. 34           February 25, 1990     T.6S.,R.3W.,26SE1/4
  MTMMC         175438         Tabor No. 35           February 25, 1990     T.6S.,R.3W.,26SE1/4
  MTMMC         175439         Tabor No. 36           February 25, 1990     T.6S.,R.3W.,26SE1/4
  MTMMC         175440         Tabor No. 37           February 25, 1990     T.6S.,R.3W.,26SW1/4


</TABLE>

<PAGE>


                                    Lease

That certain metalliferous lease designated as lease number M-1829-91 dated 
effective July 25, 1991 by and between the Department of State Lands of the 
State of Montana, as lessor, and Tabor Resources Corporation, as lessee, 
covering the lands located in Section 36, Township 6 South, Range 3 West, 
Madison County, Montana.













                                      A-5


<PAGE>

                        Tabor Mines & Metals Corporation
                            a Minnesota corporation



Patented Mining Claims

St. John, Mineral Survey 5984, Patent No. 34690

Butcher Gulch Placer, Tract 3 of Book 7 Surveys, Page 253, containing 20,463 
[illegible]

Nellie Bly, Mineral Survey 9722, Patent No. 491535

Alder Fraction, Mineral Survey 9722, Patent No. 491535

Prescot, Mineral Survey 9722, Patent No. 491535

Malta, Mineral Survey 9722, Patent No. 491535


<PAGE>


                      ASSIGNMENT OF MINING CLAIMS AND LEASE

      This Assignment of Mining Claims and Lease (the "Assignment") is made 
effective as of ______ December, 1998, by and between Tabor Resources 
Corporation, a Minnesota corporation (hereinafter referred to as "Assignor"), 
whose address is 5198 West 76th Street, Edina, Minnesota 55439, and 
Conjecture Silver Mines, Inc., an Idaho corporation (hereinafter referred to 
as "Assignee"), whose address is 905 North Pines Road, Spokane, Washington 
99206.

                                    RECITALS

     A.   Assignor owns certain unpatented mining claims and a lease located 
in the Alder Gulch area of the Virginia City Mining District in southwestern 
Montana. Such claims and leases are more specifically identified in Exhibit 
"A" annexed to and made a part of this Assignment.

     B.   Assignor has determined to sell and assign such claims and lease to 
Assignee, and Assignee has offered to buy the same from Assignor, for the 
consideration and on the terms and conditions set forth in that certain asset 
purchase agreement dated as of December ____, 1998.

     NOW THEREFORE, in consideration of the premises, and other good and 
valuable consideration, the receipt and sufficiency of which are hereby 
acknowledged, Assignor does hereby sell, assign, transfer and convey unto 
Assignee all of Assignor's right, title and interest in and to the unpatented 
mining claims and lease more specifically identified on Exhibit "A," together 
with any and all easements, rights of way and water rights of way and water 
rights, if any, associated therewith.

     Executed and effective as of the date first above written.

                                    SELLER

                                    TABOR RESOURCES CORPORATION

                                    BY: 
                                       -------------------------------
                                       Its
                                          ----------------------------





<PAGE>

STATE OF MINNESOTA    )
                      )  ss.
County of Hennepin    )

     On this ______ day of December, 1998, before me, the undersigned, a 
Notary Public for the State of Minnesota, personally appeared _______________,
known to me personally to be the ________________ of Tabor Resources 
Corporation, the corporation whose name is subscribed to the within 
instrument, and acknowledged to me that he executed the same on behalf of said 
corporation.

     IN WITNESS WHEREOF, I have hereunto subscribed my hand and affixed my 
notarial seal the day and year in this certificate first above written.


                                           -----------------------------------
                                           NOTARY PUBLIC, In and for the State
                                           of Minnesota, residing at

                                           -----------------------------------

My Commission expires:

---------------------------------