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1943 -1944: Elk Mountain Valley Coal Company's Hanna Underground Mine in Hanna, Wyoming

Notes from Bob Leathers

The Elk Mountain Valley Coal Company's Hanna underground mine was opened in 1943 and closed in 1944. The mine produced 10,753 tons of coal with an average of 3 workers. No deaths were found in the mine.

Hanna Basin Museum Website – A Connection to the Past