Two miners, one with an air driven percussion drill called a stoper, pose in a tunnel of the Big Five Mine in Idaho Springs (Clear Creek County), Colorado. The men wear work clothes and rubber boots. An adjustable jack is used to hold up the roof...
Big Five Mine (Clear Creek County, Colo.)--1890-1900.; Idaho Springs (Colo.)--1890-1900.; Miners.; Mining.
[between 1896 and 1900?]
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