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were coal mining equipment comes from

May 26, 2020· About 55% of total U.S.coalproduction was mined in the Westerncoalregion. Wyoming, the largestcoal-producing state in the United States, produced 39% of total U.S.coalproduction and 72% of thecoalmined in the Westerncoalregion. Six of the top ten largest U.S.coal-producing mineswerein Wyoming, and all of those mines are surface ...

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