Sand, gravel, clay and refractory mining
|
21232
|
Sand, gravel, clay and ceramic and refractory minerals mining and quarrying
|
|
212321
|
Construction sand and gravel
|
2123211
|
Construction sand and gravel (run of pit or bank)
|
21232111
|
Construction sand and gravel (run of pit or bank)
|
2123211111
|
Construction sand (run of pit or bank)
|
2123211121
|
Construction gravel (run of pit or bank)
|
2123213
|
Construction sand and gravel (washed, screened, or otherwise treated)
|
21232131
|
Construction sand (washed, screened, or otherwise treated)
|
2123213111
|
Construction sand (washed, screened, or otherwise treated)
|
21232132
|
Construction gravel (washed, screened, or otherwise treated)
|
2123213221
|
Construction gravel (washed, screened, or otherwise treated)
|
212321W
|
Construction sand and gravel, nsk #
|
212321WY
|
Construction sand and gravel, nsk
|
212321WYWT
|
Construction sand and gravel, nsk #
|
212322
|
Industrial sand
|
2123221
|
Industrial glass sand
|
21232211
|
Industrial glass sand
|
2123221100
|
Industrial glass sand
|
2123223
|
Industrial molding sand
|
21232231
|
Industrial molding sand
|
2123223100
|
Industrial molding sand
|
2123229
|
Other industrial sand
|
21232291
|
Other industrial sand
|
2123229100
|
Other industrial sand
|
212322W
|
Industrial sand, nsk
|
212322WY
|
Industrial sand, nsk
|
212322WYWT
|
Industrial sand, nsk #
|
212324
|
Kaolin and ball clay
|
2123240
|
Kaolin and ball clay
|
21232401
|
Kaolin and ball clay
|
2123240111
|
Kaolin
|
2123240121
|
Ball clay
|
2123240YWT
|
Kaolin and ball clay, nsk #
|
212325
|
Clay, ceramic and refractory minerals
|
2123251
|
Bentonite
|
21232511
|
Bentonite
|
2123251100
|
Bentonite
|
2123252
|
Bentonite
|
2123253
|
Fire clay
|
21232531
|
Fire clay
|
2123253100
|
Fire clay #
|
2123254
|
Fire clay
|
2123255
|
Fuller's earth
|
21232551
|
Fuller's earth
|
2123255100
|
Fuller's earth
|
2123256
|
Fuller's earth
|
2123257
|
Feldspar (crude, crushed, or ground)
|
21232571
|
Feldspar (crude, crushed, or ground)
|
2123257100
|
Feldspar (crude, crushed, or ground)
|
2123258
|
Common (miscellaneous) clay and shale
|
21232581
|
Common (miscellaneous) clay and shale
|
2123258111
|
Crude common (miscellaneous) clay and shale
|
2123258121
|
Prepared common (miscellaneous) clay and shale
|
2123259
|
Other clay, ceramic and refractory minerals including magnesite and brucite
|
21232591
|
Other clay, ceramic and refractory minerals including magnesite and brucite
|
2123259100
|
Other clay, ceramic and refractory minerals including magnesite and brucite
|
212325A
|
Feldspar (crude, crushed, or ground)
|
212325B
|
Common (miscellaneous) clay and shale
|
212325W
|
Other clay, ceramic and refractory minerals, nsk
|
212325WY
|
Other clay, ceramic and refractory minerals, nsk
|
212325WYWT
|
Other clay, ceramic and refractory minerals, nsk #
|
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