The R occurrence is located north of Highway No.4 on Sproat Lake, approximately 2.1 kilometres south west of Ward Lake.

The area is underlain by Upper Triassic Karmutsen Formation (Vancouver Group) basalt to andesite intruded by granite-granodiorite rocks.

A limonitic, carbonate altered and silicified sheared contact zone between andesite and granodiorite contains chalcopyrite and pyrite in fractures and as disseminations. The gossanous contact zone is about 30 metres wide. A grab sample assayed 0.7 per cent copper and 2.39 grams per tonne silver (Property File-Prospectus, Progress Mines Ltd.).

In 1970, the R claims were staked and prospected by D.C. Wing. They were transfered to Progress Mines Limited the following year.