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Siliceous Fossil Meals (Kieselguhr, Tripolite and Diatomite)
HS: 2512
MINING: Diatomite
Asbestos
HS: 2524
MINING: Asbestos
Clays; (not including expanded clays of heading no. 6806), andalusite kyanite and sillimanite, whether or not calcined; mullite; chamotte or dinas earth
HS: 2508
Dolomite, whether or not calcined; dolomite roughly trimmed, cut by sawing or otherwise into blocks or slabs of rectangular (including square) shape; agglomerated dolomite (including tarred dolomite)
HS: 2518
Natural magnesium carbonate (magnesite); fused magnesia; dead-burned (sintered) magnesia, whether or not containing small quantities of other oxides added before sintering; magnesium oxide, pure or not
HS: 2519
Gypsum; anhydrite; plasters (consisting of calcined gypsum or calcium sulphate), coloured or not, with or without small quantities of accelerators or retarders
HS: 2520
Portland cement, aluminous cement ("ciment fondu"), slag cement, supersulphate cement and similar hydraulic cements, whether or not coloured or in the form of clinkers
HS: 2523
Mica, including splittings; mica waste
HS: 2525
Natural borates and concentrates thereof (whether calcined), but not including borates separated from natural brine; natural boric acid containing not less than 85% of H3Bo3, calculated on the dry weight
HS: 2528
Felspar; leucite; nepheline and nepheline syenite; fluorspar
HS: 2529
Mineral substances not elsewhere specified or included
HS: 2530
Iron pyrites; unroasted
HS: 250200
Quartzite; crude or roughly trimmed
HS: 250621
Quartzite; cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape, (excluding crude or roughly trimmed)
HS: 250629
Kaolin and other kaolinic clays; whether or not calcined
HS: 250700
Clays (excluding expanded clays of heading no. 6806); decolourising
HS: 250820
Siliceous fossil meals (egg kieselguhr, tripolite and diatomite) and similar siliceous earths; whether or not calcined, of an apparent specific gravity of 1 or less
HS: 251200
Pumice stone; crude or in irregular pieces, including crushed pumice (bimskies), whether or not heat-treated
HS: 251311
Pumice stone; in forms other than specified in item no. 2513.11, whether or not heat-treated
HS: 251319
Emery, corundum, garnet and other abrasives; natural, crude or in irregular pieces, whether or not heat-treated
HS: 251321
Emery, corundum, garnet and other abrasives; natural, in other forms excluding crude or in irregular pieces, whether or not heat-treated
HS: 251329
Sandstone; crude or roughly trimmed
HS: 251621
Sandstone; merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape
HS: 251622
Limestone flux; limestone and other calcareous stone, of a kind used for the manufacture of lime or cement
HS: 252100
Cryolite and chiolite; natural
HS: 252700
Natural borates and concentrates thereof (whether or not calcined), but not including borates separated from natural brine; natural boric acid containing not more than 85 % of H3BO3 calculated on the dry weight
HS: 252800
Sodium borates; natural, whether or not calcined
HS: 252810
Borates; natural, and concentrates thereof, n.e.s. in heading no. 2528, excluding borates separated from natural brine; natural boric acid containing not more than 85% of H3Bo3 calculated on the dry weight
HS: 252890
Earth colours
HS: 253030
Natural micaceous iron oxides
HS: 253040
Region/Country
Period 2007 - 2022
Updated N/A
Period 2007 - 2022
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Siliceous Fossil Meals (Kieselguhr, Tripolite and Diatomite) - Puerto Rico - Production

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