Sub-Chapter2005200620072008200920102011
Salt (including table salt)$158 $7  $540 
Natural sands of all kinds $100  $900$11,550$10,439
Quartz (other than natural sands); quartzite   $15,145 $14,772 
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$750$2,250$1,500$4,072  $20
Chalk.    $2,571  
Natural barium sulphate (barytes)      $20
Pumice stone; emery; other natural abrasives$1,185     $31
Marble, travertine, ecaussine and other stone $2,102     
Granite, porphyry, basalt, sandstone and other stone$1,160$58,672$38,189$30,955$16,160$16,220$8,908
Pebbles, gravel, broken or crushed stone$1,518,391$2,075,250$2,691,684$2,987,386$4,670,010$4,639,136$6,346,471
Natural magnesium carbonate (magnesite)  $22    
Gypsum; anhydrite; plasters   $611   
Quicklime, slaked lime and hydraulic lime$31,200$234,350$282,610$42,336$132,300 $129,872
Portland cement, aluminous cement, slag cement$1,043,607      
Natural steatite, whether or not roughly trimmed $31     
Mineral substances$3,968$2,474     
Total$2,600,419$2,375,229$3,014,012$3,080,505$4,821,941$4,682,218$6,495,761