sentences: surface mining removes the vegetation above the coal
docs: naics_coal_mining_1 is naics_coal_mining. coal_mine is mine. coal_miner is miner. cut_and_fill_mining is method_of_last_resort. mining is removal_by_moving. mining is defense. placer_mining is mining. mining_geology is economic_geology. mining is production. coal_field is mineral_field.