Sunnyside Mine (American Tunnel; Mogul Mine; Washington Mine; Belle Creole; Gold Prince; Brenneman Mine; Sunnyside Mine Group), Howardsville, Silverton District, San Juan Co., Colorado, USA
A gold-silver-lead-copper-zinc mine. Started in the late 1880's and closed 1930. Reopened 1937 and closed 1938. Worked 1959 thru 1985 (1960's - worked the Washington vein). Worked 1985 until recently by Sunnyside Gold Corp., subsidiary of Echo Bay Mines, Ltd. Workings include the Terry shaft and the famous American Tunnel, often attributed to being its own mine. Produced over $150,000,000 in all metals mined. Past owners include: R.J. McNutt; M.M. Engleman& L.C. Thompson; L.C. Thompson & Frank Thompson; Judge John H. Terry (1900-1910); 2 sons & daughter of Judge Terry (1910-1917); United States Smelting & Refining Co. (1917- ); Standard Uranium (which formed Standard Metals Corp.)(lessee)(1959-1985).
Ref:(in part):
Rocks & Min.: 63: 366-384; 71:165-166; 75:306-307.
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Map Reference: 37°54'11"N , 107°36'41"W
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Mineral List:40 entries listed. 34 valid minerals.
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