Life beneath the earth in Wyoming''s only underground coal mine
Jun 30, 2020· Underground coal mining is a vanishing art in Wyoming, however. Each chop of the longwall miner''s spinning metallic teeth brings this facility closer to the end of its life. Mining down here is expected to come to a halt in December 2021. Mine engineers have it calculated nearly to the day — the mine''s last day will be Dec. 9 or maybe Dec ...