The Doc occurrence is located on a ridge separating two east-flowing tributaries of Doctor Creek at an elevation of 2440 metres and approximately 30 kilometres west of Canal Flats in the Golden Mining Division.

The area is near the contact between the Creston Formation and the upper division of the Aldridge Formation, of the Proterozoic Purcell Supergroup.

In the vicinity of the occurrence, the Aldridge Formation consists of quartz wacke, quartz arenite, siltstone and lesser argillite intruded by thick gabbroic sills of the Moyie Intrusions. The sedimentary rocks are characteristically rusty weathering, fine to medium grained and thin to medium bedded. Individual beds range from a few millimetres to 30 centimetres thick. Discontinuous horizons of intraformational conglomerate were noted in a number of localities. Finely disseminated pyrrhotite is common. The sedimentary rocks of the Lower Aldridge have undergone both thermal and regional metamorphism to at least greenschist facies. Biotite alteration in the argillaceous units and quartz-sericite alteration in the arenite and wacke have generated widespread phyllitic and schistose textures.

The Proterozoic Moyie sills cutting the Lower Aldridge Formation are sill-like in overall form but often crosscut bedding or appear as irregular lenses. Some are in excess of 100 metres thick and can be traced almost 10 kilometres. The thicker sills have coarse-grained gabbroic cores and finer dioritic margins. They are all mainly composed of hornblende and plagioclase phenocrysts set in a matrix of similar composition (Paper 1990-1).

The White Creek Batholith is a well-differentiated, Cretaceous, granitic intrusion that cuts the Lower Aldridge rocks to the east and south. Along the northern border of the batholith, a megacrystic granodiorite phase is common. Plagioclase phenocrysts are commonly 3 to 5 centimetres long, set in a matrix of fine- to medium-grained plagioclase, potassium feldspar, quartz and biotite. Magnetite and pyrite occur locally. Aplite and pegmatite dikes are common within the Lower Aldridge sedimentary rocks (Geological Survey of Canada Memoir 369).

The occurrence consists of disseminations and streaks of galena, chalcopyrite, sphalerite, pyrite and ankerite associated with northwest-trending quartz veins cutting argillite and argillaceous quartzite of the Creston Formation. At least a dozen veins have been mapped. The largest vein is 0.2 to 2 metres wide and exposed over an area of approximately 240 by 180 metres. The footwall is silicified, albitized and commonly mineralized with disseminated pyrite, sphalerite and galena. Minor siderite, limonite, azurite, malachite and possible pyromorphite are also reported.

During 1971 through 1973, Kerr Addison Mines completed programs of soil and rock sampling, geological mapping and a 1.6 line-kilometre ground electromagnetic survey on the area as the Doc claims. In 1971, samples (no. 661) are reported to have yielded up to 0.2 gram per tonne gold, 12.0 grams per tonne silver and 0.92 per cent lead (Property File - Kerr Addison Mines Ltd. [1971-10-19]: Certificate of Analysis - A21-748 - Kerr Addison Mines Ltd. - Dewar Creek Doc claims). The following year, two samples (568 and 569) yielded up to 182.6 grams per tonne silver, 1.29 per cent copper and 18.00 per cent lead (Property File - Kerr Addison Mines Ltd. [1972-10-02]: Certificate of Analysis - A22-574 - Kerr Addison Mines Ltd. - Dewar Creek Doc claims).

In 1991, Teck Exploration completed a program of geological mapping and rock, silt and soil sampling on the area as the Cotton claims. A chip sample from the main vein assayed 3 per cent lead, 0.8 per cent zinc, 0.2 per cent copper and 150 grams per tonne silver (Assessment Report 21275).

In 1996, Eagle Plains Resources, in conjunction with Miner River resources, completed three diamond drill holes, totalling 248.1 metres. In 1997 and 1998, Kennecott Canada Exploration Inc. covered the property with mapping, soil geochemistry and UTEM and gravity surveys. Drilling adjacent to an area of extensive tourmalinization intersected significant silver and lead mineralization over an interval of 105.2 metres. Within that interval there are 46 narrow, stratabound sulphide horizons in thin-bedded siliciclastic rocks, tentatively identified as uppermost Middle Aldridge or Upper Aldridge.

Drillhole intersections yielded up to 5.5 grams per tonne silver and 0.146 per cent lead, including 0.69 per cent lead over 11.7 metres and 4.77 per cent lead over 1.1 metres in hole 98-05; 2.55 per cent zinc over 1.29 metres and 7.4 grams per tonne silver, 0.355 per cent lead with 0.714 per cent zinc over 0.34 metre in hole 98-04 (Property File - Eagle Plains Resources Ltd. [1998-04-30]: Annual Report - 1997 - Eagle Plains Resources Ltd. - Findlay Creek Project). Kennecott dropped the option in February 1999.

In early 1999, Eagle Plains and Miner River amalgamated to form Eagle Plains Resources Ltd. In May 1999, Billiton Exploration Canada Ltd. optioned the North Findlay and Hap properties, 10 kilometres to the northeast. As part of the agreement, Eagle Plains completed 1617 metres of drilling in six holes. Although the results were reported to be encouraging, Billiton elected not to proceed with its option in March 2000.