This 1890 photograph depicts two mining workers 1000 feet below ground in the Anaconda Mine in Butte Montana. Carleton Watkins was hired to photograph the mines of the Anaconda Mining Company to document its success and and future prospects.

A collection of 80 original Carleton E. Watkins photographs of interiors of four Anaconda Mining Company mines in Butte Montana has been made into an interesting digital collection by the University of Idaho Library. Browse the collection here.