Structure of NAICS Code 21 - Mining, Quarrying, and Oil and Gas Extraction
Hierarchy
Subcategories are listed in order from general (3-Digit) to more specific (6-Digit) industry. Each category link leads to the corresponding Code Details page.
Categories
General
Specific
Hierarchy
3-Digits
4-Digits
5-Digits
6-Digits
211 - Oil and Gas Extraction
2121 - Coal Mining
2123 - Nonmetallic Mineral Mining and Quarrying
212 - Mining (except Oil and Gas)
21221 - Iron Ore Mining
21222 - Gold Ore and Silver Ore Mining
21223 - Copper, Nickel, Lead, and Zinc Mining
21229 - Other Metal Ore Mining
2122 - 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
21231 - Stone Mining and Quarrying
212321 - Construction Sand and Gravel Mining
212322 - Industrial Sand Mining
212323 - Kaolin, Clay, and Ceramic and Refractory Minerals Mining
21232 - Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying
21239 - Other Nonmetallic Mineral Mining and Quarrying
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
21311 - Support Activities for Mining