In 1967 on the Mag group of claims, Cominco Limited mapped and trenched (60 metres) and built 4 kilometres of road. In 1968, Cominco conducted soil sampling and 366 metres of trenching on the Mag 1 and 2 claim. In 1970, Silver Ray Mines Ltd. entered into an option agreement with owner Gordon Larrabee to gain ownership of the Mag group. Some work had been done on the claims on behalf of Silver Ray in 1969.

The area of the Mag occurrence is reported to be underlain by slate, quartzite and limestone. The only property report available (Croteau, 1970) reports that the Middle Proterozoic Mount Nelson Formation (Purcell Supergroup) and the Upper Proterozoic Horsethief Creek Group carry most of the mineralization. Property stratigraphy is poorly documented and the host formation(s) is open to question. The Mag property (which contained 39 claims by 1970) location is known only to be on Starbird Ridge at the 1980 metre elevation.

Some of the pits and trenches on the property show profuse mineralization that is predominantly lead, zinc and silver. The exposures appear to be replacement deposits in interbedded layers of sediments. The most prominent is 1.2 metres wide showing heavy concentrations of galena and iron oxide. At a slope distance of 15 metres above the main showing there are narrow, siliceous vein zones carrying galena and sphalerite in a dark grey limestone band. Various trenches show that intermittent lead-zinc veins may occur over a distance of 762 metres from the creek upward on the slope. A grab from the "Lower Pit" yielded 1426 grams per tonne silver, 30.84 per cent lead and 10.17 per cent zinc (Property File, Croteau, 1970).

The Minister of Mines Annual Report for 1967 reports that galena and sphalerite occur in gash veins in dolomitic limestone and dolomites.