Sub-Chapter2006200720082009
Salt (including table salt)$108,227$17,735$28,612$18,136
Unroasted iron pyrites. $88$193,623 
Natural graphite.$172,129  $80,072
Natural sands of all kinds$2,957$8,063$757$35,528
Quartz (other than natural sands); quartzite  $354$1,603
Kaolin and other kaolinic clays, whether or not calcined.  $1,189$255,598
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...  $15,859$52,168
Chalk.  $169,462 
Siliceous fossil meals$1,241 $302 
Marble, travertine, ecaussine and other stone  $298$11,180
Granite, porphyry, basalt, sandstone and other stone$42,120$2,329$239 
Pebbles, gravel, broken or crushed stone$503$2,061$86,071$12,471
Dolomite, whether or not calcined or sintered  $1,678 
Gypsum; anhydrite; plasters$250,553$73,105$1,418,362 
Portland cement, aluminous cement, slag cement$144,953$84,163$121,114$4,771
Mica, including splitings; mica waste.   $17,159
Natural steatite, whether or not roughly trimmed   $2,758
Natural borates and concentrates thereof$34,631$4,086  
Mineral substances$2,850 $1,394$522
Total$760,164$191,630$2,039,314$491,966