The lower mine is the Tiffen. The upper tailing pile is the Singer Mine.
The Tiffen claim (No. 51, pl. 30) adjoins the Singer on the west, and its principal tunnel is only 500 feet west of that on the Singer claim. The claim was located in 1905 by C.A. Beck, who mined most of the ore and still operates it.
The principal workings are a tunnel, which contains about 400 feet of drifts, and four shafts and winzes.