Hot water was reportedly hit below the 300 m-level in the Big Divide Mine (NW¼ SW¼ Sec. 26, T2N, R42E) during the 1920s. About 159 m3/day were pumped during this time (Engineering and Mining Journal Press, 1923). Two miners were reportedly scalded in the shaft sump, and the shaft steamed at the surface in cold weather until the ventilation system was changed (Norman Coombs, personal commun., 1972).