21 Mining, Quarrying, and Oil and Gas Extraction

212311 Dimension Stone Mining and Quarrying

This industry comprises establishments primarily engaged in developing the mine site and/or mining or quarrying dimension stone (i.e., rough blocks and/or slabs of stone).

Establishments primarily engaged in dressing dimension stone and manufacturing stone products are classified in U.S. Industry 327991, Cut Stone and Stone Product Manufacturing.

212312 Crushed and Broken Limestone Mining and Quarrying

This industry comprises (1) establishments primarily engaged in developing the mine site, mining or quarrying crushed and broken limestone (including related rocks, such as dolomite, cement rock, marl, travertine, and calcareous tufa) and (2) preparation plants primarily engaged in beneficiating limestone (e.g., grinding or pulverizing).

Producing lime are classified in Industry 327410, Lime Manufacturing.

Mining or quarrying bituminous limestone are classified in U.S. Industry 212319, Other Crushed and Broken Stone Mining and Quarrying.

212313 Crushed and Broken Granite Mining and Quarrying

212319 Other Crushed and Broken Stone Mining and Quarrying

This industry comprises: (1) establishments primarily engaged in developing the mine site and/or mining or quarrying crushed and broken stone (except limestone and granite); (2) preparation plants primarily engaged in beneficiating (e.g., grinding and pulverizing) stone (except limestone and granite); and (3) establishments primarily engaged in mining or quarrying bituminous limestone and bituminous sandstone.

Illustrative Examples:

Bituminous limestone mining and/or beneficiating
Marble crushed and broken stone mining and/or beneficiating
Bituminous sandstone mining and/or beneficiating
Sandstone crushed and broken stone mining and/or beneficiating

Mining or quarrying crushed and broken limestone are classified in U.S. Industry 212312, Crushed and Broken Limestone Mining and Quarrying.

Mining or quarrying crushed and broken granite are classified in U.S. Industry 212313, Crushed and Broken Granite Mining and Quarrying.

212321 Construction Sand and Gravel Mining

This industry comprises establishments primarily engaged in one or more of the following: (1) operating commercial grade (i.e., construction) sand and gravel pits; (2) dredging for commercial grade sand and gravel; and (3) washing, screening, or otherwise preparing commercial grade sand and gravel.

Establishments primarily engaged in mining industrial grade sand are classified in U.S. Industry 212322, Industrial Sand Mining.

212322 Industrial Sand Mining

This industry comprises establishments primarily engaged in one or more of the following: (1) operating industrial grade sand pits; (2) dredging for industrial grade sand; and (3) washing, screening, or otherwise preparing industrial grade sand.

Establishments primarily engaged in mining commercial (i.e., construction) grade gravel are classified in U.S. Industry 212321, Construction Sand and Gravel Mining.

212324 Kaolin and Ball Clay Mining

This industry comprises (1) establishments primarily engaged in developing the mine site and/or mining kaolin or ball clay (e.g., china clay, paper clay, and slip clay) and (2) establishments primarily engaged in beneficiating (i.e., preparing) kaolin or ball clay.

Establishments primarily engaged in calcining, dead burning, or otherwise processing (i.e., beyond basic preparation) kaolin and ball clay are classified in U.S. Industry 327992, Ground or Treated Mineral and Earth Manufacturing.

212325 Clay and Ceramic and Refractory Minerals Mining

This industry comprises establishments primarily engaged in one or more of the following: (1) mining clay (except kaolin and ball), ceramic, or refractory minerals; (2) developing the mine site for clay, ceramic, or refractory minerals; and (3) beneficiating (i.e., preparing) clay (except kaolin and ball), ceramic, or refractory minerals.

Illustrative Examples:

Bentonite mining and/or beneficiating
Fuller's earth mining and/or beneficiating
Common clay mining and/or beneficiating
Magnesite mining and/or beneficiating
Feldspar mining and/or beneficiating
Nepheline syenite mining and/or beneficiating
Fire clay mining and/or beneficiating
Shale (except oil shale) mining and/or beneficiating

Shaping, molding, baking, burning, or hardening clay and nonclay refractories, and structural clay products are classified in Industry 327120, Clay Building Material and Refractories Manufacturing;

Developing the mine site, mining, and/or beneficiating kaolin or ball clay are classified in U.S. Industry 212324, Kaolin and Ball Clay Mining.

Shaping, molding, glazing, and firing pottery, ceramics, and plumbing fixtures are classified in Industry 327110, Pottery, Ceramics, and Plumbing Fixture Manufacturing.

212391 Potash, Soda, and Borate Mineral Mining

This industry comprises establishments primarily engaged in developing the mine site, mining and/or milling, or otherwise beneficiating (i.e., preparing) natural potassium, sodium, or boron compounds. Drylake brine operations are included in this industry, as well as establishments engaged in producing the specified minerals from underground and open pit mines.

Manufacturing sodium carbonate, boron compounds, and/or potassium salts are classified in Industry 325180, Other Basic Inorganic Chemical Manufacturing.

Manufacturing table salt are classified in U.S. Industry 311942, Spice and Extract Manufacturing.

212392 Phosphate Rock Mining

This industry comprises establishments primarily engaged in developing the mine site, mining, milling, and/or drying or otherwise beneficiating (i.e., preparing) phosphate rock.

Establishments primarily engaged in manufacturing phosphoric acid, superphosphates, or other phosphatic fertilizer materials are classified in U.S. Industry 325312, Phosphatic Fertilizer Manufacturing.

212393 Other Chemical and Fertilizer Mineral Mining

This industry comprises establishments primarily engaged in developing the mine site, mining, milling, and/or drying or otherwise beneficiating (i.e., preparing) chemical or fertilizer mineral raw materials (except potash, soda, boron, and phosphate rock).

Illustrative Examples:

Barite mining and/or beneficiating
Rock salt mining and/or beneficiating
Celestite mining and/or beneficiating
Sulfur mining and/or beneficiating
Fluorspar mining and/or beneficiating

Mining and/or milling or otherwise beneficiating natural potassium, sodium, or boron compounds are classified in U.S. Industry 212391, Potash, Soda, and Borate Mineral Mining;

Manufacturing industrial salt are classified in U.S. Industry 325998, All Other Miscellaneous Chemical Product and Preparation Manufacturing;

Mining, milling, drying, and/or sintering or otherwise beneficiating phosphate rock are classified in U.S. Industry 212392, Phosphate Rock Mining.

Manufacturing table salt are classified in U.S. Industry 311942, Spice and Extract Manufacturing.

212399 All Other Nonmetallic Mineral Mining

This industry comprises establishments primarily engaged in developing the mine site, mining and/or milling, or otherwise beneficiating (i.e., preparing) nonmetallic minerals (except stone, sand, gravel, clay, ceramic, refractory minerals, and chemical and fertilizer minerals).

Illustrative Examples:

Gypsum mining and/or beneficiating
Soapstone mining and/or beneficiating
Mica mining and/or beneficiating
Talc mining and/or beneficiating
Pyrophyllite mining and/or beneficiating

Mining or quarrying stone are classified in Industry 21231, Stone Mining and Quarrying;

Mining, quarrying, or beneficiating sand, gravel, clay, and ceramic and refractory minerals are classified in Industry 21232, Sand, Gravel, Clay, and Ceramic and Refractory Minerals Mining and Quarrying;

Mining, quarrying, or beneficiating natural potash, soda, and borate are classified in U.S. Industry 212391, Potash, Soda, and Borate Mineral Mining.

Mining and/or milling or otherwise beneficiating phosphate rock are classified in U.S. Industry 212392, Phosphate Rock Mining.