Codes Titles Number of US Businesses
21 Mining 29,283
211111Crude Petroleum and Natural Gas Extraction 5,153
211112Natural Gas Liquid Extraction 468
212111Bituminous Coal and Lignite Surface Mining 431
212112Bituminous Coal Underground Mining 117
212113Anthracite Mining 51
212210Iron Ore Mining85
212221Gold Ore Mining 355
212222Silver Ore Mining 38
212231Lead Ore and Zinc Ore Mining 28
212234Copper Ore and Nickel Ore Mining 104
212291Uranium-Radium-Vanadium Ore Mining 52
212299All Other Metal Ore Mining 55
212311Dimension Stone Mining and Quarrying 553
212312Crushed and Broken Limestone Mining and Quarrying 752
212313Crushed and Broken Granite Mining and Quarrying 184
212319Other Crushed and Broken Stone Mining and Quarrying 410
212321Construction Sand and Gravel Mining 2,199
212322Industrial Sand Mining 189
212324Kaolin and Ball Clay Mining 55
212325Clay and Ceramic and Refractory Minerals Mining 120
212391Potash, Soda, and Borate Mineral Mining 38
212392Phosphate Rock Mining 21
212393Other Chemical and Fertilizer Mineral Mining 119
212399All Other Nonmetallic Mineral Mining 290
213111Drilling Oil and Gas Wells2,423
213112Support Activities for Oil and Gas Operations 13,923
213113Support Activities for Coal Mining 502
213114Support Activities for Metal Mining 369
213115Support Activities for Nonmetallic Minerals (except Fuels) Mining 199