In 1914 the mine was taken over by the Sundown Tin and Copper Mining Company (N.L.) which erected a 10-head battery driven by a suction-gas plant, and built two fines dams.
Production in 1919 and 1920 was modest, and in 1921 the smelter treated 100 tons of ore yielding 20 tons of matte containing 37% copper, and 60oz silver per ton.