Sub-Chapter20052006200720082010
Salt (including table salt)$156  $111,893$404
Natural graphite.    $8,769
Natural sands of all kinds   $1,274$837
Quartz (other than natural sands); quartzite$5,051$2,847   
Kaolin and other kaolinic clays, whether or not calcined. $2,070 $3,229$1,171
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$781$673$6,061$74,727$2,678
Chalk.  $194$37,244$162,364
Pumice stone; emery; other natural abrasives $426$2,353  
Marble, travertine, ecaussine and other stone  $2,784  
Granite, porphyry, basalt, sandstone and other stone   $15 
Pebbles, gravel, broken or crushed stone $6,898$76$231$582,992
Gypsum; anhydrite; plasters $4,830   
Quicklime, slaked lime and hydraulic lime  $3 $26,403
Portland cement, aluminous cement, slag cement $76$166,371 $215,814
Mineral substances$1,930$873$168$2,385$567
Total$7,918$18,693$178,010$230,998$1,001,999