1937 - 1969: The Monolith Portland Midwest Coal Company at Hanna and Elmo, Wyoming

Page by Bob Leathers with contributions from Gary Milliken
The Monolith Portland Midwest Coal Company's Monolith open pit mine near Elmo opened coal production in 1937 and closed production in 1969. The mine produced, over 32 consecutive years of coal production, a total of 1,694,398 tons of coal with a peak work force of 60 workers in 1966. The mine produced coal for the Portland Cement Company in Laramie. No miners were killed in the Monolith mine.
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Monolith Shovel Uncovering coal in the 1960's (Image from Bob Leathers Collection)
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Monolith Cement Plant in Laramie in the 1960's that use the Elmo Coal (Image from Bob Leathers Collection)

1960

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Monolith Coal Company. Elmo. (Hanna Miner. 1960
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Monolith Portland Midwest Co. (1961 Hanna Miner)

Monolith Portland Midwest Coal Company's Monolith Mine Map

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The Union Pacific Coal Company Proposed Strip Mining Development. Location of 4A Tipple. Nugget Mine. Monolith Mine (Map Collection from the Hanna Basin Museum)