On the Tamarak claims, lead, zinc and silver mineralization is reported to occur within rocks of the Middle Proterozoic Dutch Creek Formation (Purcell Supergroup). These rocks are reported to included dolomite, calcareous schist and argillite.
J.H. Conroy commenced work on his Tamarak claims in 1971, completing a program which included soil sampling, road construction, trenching (50 metres) and 230 square metres of stripping. In 1972, J.H Conroy with A. Louie took 50 soil samples and completed 15 metres of trenching and 395 square metres of stripping on the Tamarak claims. In 1973, Conroy and Louie did more stripping and excavated 5 pits on the Rank and Tamarak claims.