The Ace showing is located on the Grandview Ski Hill site about 9 kilometres south of Kamloops. The area is underlain by Cherry Creek unit diorite to monzonite and Sugarloaf unit hornblende diorite porphyry of the Late Triassic-Early Jurassic Iron Mask batholith. In 1979, a percussion-drill hole by Cominco, in the vicinity of the adit on the Ace 1 claim, intersected 15.2 metres grading 0.29 per cent copper (Assessment Report 8038). At the collar of this hole, a zone of malachite, azurite and limonite was exposed while digging for water. The fracture-controlled mineralization occurs in a 9 metre wide, strong fault zone striking 220 degrees and dipping 70 degrees westerly. The original Ace adit was driven on this structure and is now caved. Hostrock is Cherry Creek unit diorite containing traces of chalcopyrite and heavy pyrite. Strong K-feldspar development and epidote alteration is evident. In 1991, Cominco Ltd. drilled four percussion-drill holes to test an overburden covered area immediately north and east of the adit. One hole (91-3), about 175 metres north of the adit, intersected 52 metres averaging 0.38 per cent copper in pyritic and intensely albitized Cherry Creek unit monzonite with significant clay and carbonate alteration (Assessment Report 21468). All drillholes intersected monzonite and diorite of the Cherry Creek unit. Propylitic alteration consisting predominantly of epidote, chlorite and carbonate alteration minerals were noted in all the holes.

In 1969, Great Plains Development Company of Canada Ltd. conducted geological mapping, soil sampling (290), 8.8 kilometres of ground magnetometer survey and 44.4 kilometres of induced polarization survey on the Byr and Ace No. 1 claim group which also covered the Fargo (092INE051), B (092INE118) and Dewey(092INE21) showings. In 1978, Cominco Ltd. drilled seven percussion-drill holes totalling 488 metres on the Reg and Ace claims on behalf of Great Plains Development, 4.5 line kilometres of induced polarization and ground magnetometer survey over the Reg and Byr claims, and 6.5 kilometres of induced polarization and magnetometer survey over the And and Lark claims. In 1979, Cominco Ltd. drilled 14 vertical percussion-drill holes totalling 829 metres on the Reg and Ace claims. In 1991, Cominco Ltd. drilled four percussion-drill holes totalling 359 metres on the Ace and Reg claims.