EXHIBIT 10(dd)


Mr. Lee Furlong, President
INTERNATIONAL PRECIOUS METALS, INC.
4625 South Ash Avenue, Suite J-1
Tempe, AZ 85282

      RE: Supplement to Preliminary Agreement between International 
          Precious Metals, Inc. ("International") and Auric Metallurgical 
          Laboratories, LLC ("Auric") Dated June 9, 1997 ("the Agreement")

Dear Mr. Furlong:

      It is the understanding of Auric that both International and Auric 
(hereafter collectively ("the parties") mutually acknowledge by the signature 
of their respective officers below the following agreed upon changes or 
additions to the June 9 Agreement between the parties.  Each represents that 
the following changes have been reviewed and ratified by the Board of 
Directors of International and a majority of the members of Auric, each of 
which have fully authorized the undersigned officers of each entity to sign 
this Supplemental Agreement.

      The terms of the Agreement are accordingly changed, modified or 
extended as follows, provided that, no term or provision of the Agreement not 
specifically modified below shall be deemed changed, waived or released in 
any manner and shall continue to be of full force and effect between the 
parties:

      1.    International will be granted an exclusive right in perpetuity to 
the "Fire Assay Procedures" ("the Technology") of Auric.  It is agreed that 
Auric, or any direct successor entity, shall continue to own and use the 
Technology for its own purposes, but will not further assign or convey such 
technology to any third party.  International may use the Technology for its 
own purposes and may further resale or assign such technology without further 
consideration to Auric.

      2.    The Technology is defined between the parties to be a 
scientifically verifiable assay process for the detection and measurement of 
potentially recoverable commercial quantities of Gold, Platinum and Palladium 
from standard ore samples.

      3.    Notwithstanding any prior agreements as to time for International 
to review and accept the Technology, whether written or oral, both parties 
now agree and stipulate that the execution of this Supplemental Agreement 
evidences the acceptance of the Technology for purchase by International, 
subject only to independent laboratory verification by a competent 




Mr. Lee Furlong, President
RE: Supplemental Agreement
June 25, 1997
Page 2


metallurgical or assay laboratory, as designated by Auric, that the 
Technology is a reliable and scientifically verifiable assay process for 
detection of potentially commercial quantities of Gold, Platinum and 
Palladium based upon standard ore samples.

      4.    It is agreed by and between the parties that International will 
complete the independent review of the Technology as described by the prior 
paragraph within   Ten   days (10) of this Supplemental Agreement at its own 
cost and expense, and will make the findings available to Auric.  Auric 
agrees to fully cooperate in the testing process and to supply expertise, 
equipment and personnel as reasonably required.  In the event, but only in 
the event, the test results do not evidence that the Technology is a reliable 
and scientifically verifiable assay process for identifying Gold, Platinum 
and Palladium from standard ore samples, International may give notice of its 
election to fully rescind the purchase obligation for the Technology to Auric 
and Auric will promptly refund the initial consideration of $75,000.00 less 
any laboratory expenses incurred by Auric to date.  International will then 
have no further purchase obligation or rights in the Technology, except the 
non-disclosure provisions of the Agreement shall survive any such recission.

      5.    In addition to the cash and note consideration recited in the 
Agreement (total $750,000), which shall continue to be paid in accordance 
with the Agreement, International shall additionally pay to Auric, upon 
testing of the Technology and in consideration for this Supplemental 
Agreement, One Hundred Thousand (100,000) of its unrestricted free trading 
common shares, either directly or through a third party without recourse to 
Auric, and Three Hundred Thousand Shares (300,000) registered free trading 
shares within sixty (60) days of this Supplemental Agreement.  International 
may elect to tender the second installment of 300,000 shares by delivering to 
Auric 400,000 shares with a requirement of Auric to reconvey or assign the 
initial 100,000 shares to a third party designated by International.  
International agrees to fully indemnify Auric from any and all adverse claims 
related to the foregoing proposed share transactions.

Accepted and Approved:                    Accepted and Approved:

AURIC METALLURGICAL                       INTERNATIONAL PRECIOUS METALS,
LABORATORIES, INC.                        An Arizona Corporation
A Utah Limited Liability Company


/s/ Alan Cottle                           /s/ Le Furlong
- -----------------------------------       -----------------------------------
By:  Alan Cottle                          By:  Lee Furlong
Its:  Manager                             Its:  President