NAICS CODE - 21 : Mining, Quarrying, and Oil and Gas Extraction

211120: Crude Petroleum Extraction

211130: Natural Gas Extraction

212111: Bituminous Coal and Lignite Surface Mining
212112: Bituminous Coal Underground Mining
212113: Anthracite Mining

212210: Iron Ore Mining

212221: Gold Ore Mining
212222: Silver Ore Mining

212230: Copper, Nickel, Lead, and Zinc Mining

212291: Uranium-Radium-Vanadium Ore Mining
212299: All Other Metal Ore Mining

212311: Dimension Stone Mining and Quarrying
212312: Crushed and Broken Limestone Mining and Quarrying
212313: Crushed and Broken Granite Mining and Quarrying
212319: Other Crushed and Broken Stone Mining and Quarrying

212321: Construction Sand and Gravel Mining
212322: Industrial Sand Mining
212324: Kaolin and Ball Clay Mining
212325: Clay and Ceramic and Refractory Minerals Mining

212391: Potash, Soda, and Borate Mineral Mining
212392: Phosphate Rock Mining
212393: Other Chemical and Fertilizer Mineral Mining
212399: All Other Nonmetallic Mineral Mining

213111: Drilling Oil and Gas Wells
213112: Support Activities for Oil and Gas Operations
213113: Support Activities for Coal Mining
213114: Support Activities for Metal Mining
213115: Support Activities for Nonmetallic Minerals (except Fuels) Mining