NAICS Code(s) 212112 (Bituminous Coal Underground Mining)
NAICS Code(s) 212111 (Bituminous Coal and Lignite Surface Mining)
Robert G. Reese has written: 'Coal recovery from underground bituminous coal mines in the United States, by mining method' -- subject(s): Coal mines and mining, Bituminous coal
NAICS Code(s) 212299 (Other Metal Ore Mining)
NAICS Code(s) 212113 (Anthracite Mining)
NAICS Code(s) 213113 (Support Activities for Coal Mining)
NAICS Code(s) 212291 (Uranium-Radium-Vanadium Ore Mining)
John R Duda has written: 'Basic estimated capital investment and operating costs for underground bituminous coal mines utilizing a continuous mining system' -- subject(s): Coal mines and mining, Bituminous coal, Costs
Barbara Fotta has written: 'Effects of mining height on injury rates in U.S. underground nonlongwall bituminous coal mines' -- subject(s): Statistics, Bituminous coal, Coal mine accidents
NAICS Code(s) 213114 (Support Activities for Metal Mining)
NAICS Code(s) 212234 (Copper Ore and Nickel Ore Mining) 212299 (Other Metal Ore Mining)
includes establishments primarily engaged in producing bituminous coal in underground mines or in developing bituminous coal underground mines.
underground mining is done when the rocks, minerals of gemstones are too far underground to get out with surface mining some kinds of underground mining are Borehole Mining Drift Mining Hard Rock Mining Shaft Mining Slope Mining