Sub-Chapter20052007
Salt (including table salt)$33,154$24,961
Natural sands of all kinds$371 
Quartz (other than natural sands); quartzite$4,676 
Kaolin and other kaolinic clays, whether or not calcined. $32
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$5,512 
Chalk. $191
Natural calcium phosphates$23 
Pumice stone; emery; other natural abrasives$588 
Marble, travertine, ecaussine and other stone$73 
Granite, porphyry, basalt, sandstone and other stone$7,772 
Pebbles, gravel, broken or crushed stone$708 
Gypsum; anhydrite; plasters$372 
Limestone flux; limestone $12,987
Portland cement, aluminous cement, slag cement$1,408,686$173,589
Mineral substances$1,298 
Total$1,463,233$211,760