|
212
|
Mining, except oil and gas
|
|
2121
|
Coal mining
|
|
21211
|
Coal mining
|
|
212111
|
Bituminous coal and lignite surface mining
|
|
212112
|
Bituminous coal underground mining
|
|
212113
|
Anthracite mining
|
|
2122
|
Metal ore mining
|
|
21221
|
Iron ore mining
|
|
212210
|
Iron ore mining
|
|
21222
|
Gold ore and silver ore mining
|
|
212221
|
Gold ore mining
|
|
212222
|
Silver ore mining
|
|
21223
|
Copper, nickel, lead, and zinc mining
|
|
212231
|
Lead ore and zinc ore mining
|
|
212234
|
Copper ore and nickel ore mining
|
|
21229
|
Other metal ore mining
|
|
212291
|
Uranium-radium-vanadium ore mining
|
|
212299
|
All other metal ore mining
|
|
2123
|
Nonmetallic mineral mining and quarrying
|
|
21231
|
Stone mining and quarrying
|
|
212311
|
Dimension stone mining and quarrying
|
|
212312
|
Crushed and broken limestone mining
|
|
212313
|
Crushed and broken granite mining
|
|
212319
|
Other crushed and broken stone mining
|
|
21232
|
Sand, gravel, clay, and refractory mining
|
|
212321
|
Construction sand and gravel mining
|
|
212322
|
Industrial sand mining
|
|
212324
|
Kaolin and ball clay mining
|
|
212325
|
Clay, ceramic, and refractory minerals mining
|
|
21239
|
Other nonmetallic mineral 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
|