Sub-Chapter2005200620072009
Salt (including table salt)$3,199$357,773$2,215$20,555
Natural sands of all kinds$1,198$116,375$902,925$330
Quartz (other than natural sands); quartzite $1,720$14,700 
Kaolin and other kaolinic clays, whether or not calcined. $100 $11,663
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$100$24,785 $523
Natural calcium phosphates$54,288   
Natural barium sulphate (barytes)  $1,780 
Siliceous fossil meals$11,777$5,140$1,759$15,392
Pumice stone; emery; other natural abrasives  $37 
Slate $25,500$7,078$1,364
Marble, travertine, ecaussine and other stone$44$560$24,792$128
Granite, porphyry, basalt, sandstone and other stone$90$35$18,341 
Pebbles, gravel, broken or crushed stone  $1,260$1,084,810
Dolomite, whether or not calcined or sintered$1,100$4,072  
Gypsum; anhydrite; plasters$119,400$43,800$231,150$2,000
Quicklime, slaked lime and hydraulic lime$354,810$491,558$381,658$617,804
Portland cement, aluminous cement, slag cement$3,381,736$3,598,653$3,094,847$204,595
Mica, including splitings; mica waste.  $390$3,208
Natural steatite, whether or not roughly trimmed$6,101$1,891  
Mineral substances  $2,178 
Total$3,933,843$4,671,962$4,685,110$1,962,372