Located at Sellwood, about 15 miles northwest of Capreol, it was reached by a short spur off the Ruel Subdivision of Canadian Northern's mainline to Foleyet. It was controlled by Mackenzie and Mann, Canadian Northern's developers. It was both an underground and open pit mine operating between 1901 and 1920. A small crushing plant was shortly replaced by a concentrating and briquetting plant. Ore was shipped to Key Harbour on Georgian Bay. Following its closure in 1920 the company town remained into the 1950's.

 

Between 1954 and 1956, Lowphos Ore surveyed and drilled properties around Sellwood and then began construction of a processing plant. In June 1959 they began shipping processed ore and by 1963 had created a palletizing plant with a 600,000-ton annual capacity. Canadian National relaid track to the mine utilizing mostly the original roadbed. Ore was shipped out to Depot Harbour on Georgian Bay for transhipping to lake boats for shipment to National Steel Corporation, owner of the operation. It closed again in the mid-1970's due to the declining steel industry and once again track was pulled up.