Sub-Chapter2005200620072008200920102011
Salt (including table salt)$334,950$493,230$630,946$936,666$883,105$884,595$1,307,363
Unroasted iron pyrites.     $1 
Natural graphite.   $85   
Natural sands of all kinds$490$410$35$15,014$3,078$1,654$4,590
Quartz (other than natural sands); quartzite$240    $2 
Kaolin and other kaolinic clays, whether or not calcined.    $10$256 
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$3,480$1,713$3,220$1,888$3,661$29,336$29,553
Natural calcium phosphates  $50    
Natural barium sulphate (barytes)    $1  
Siliceous fossil meals$390   $155$3,331 
Pumice stone; emery; other natural abrasives$43,460$29,415$122,498$84,965$33,334$2,972$4,479
Marble, travertine, ecaussine and other stone$60  $30$1$619$358
Granite, porphyry, basalt, sandstone and other stone$2,250$1,954$4,397$6,077$908$3,493$2,766
Pebbles, gravel, broken or crushed stone $135$227$699$199$1$72
Natural magnesium carbonate (magnesite)  $59 $758$110,416 
Gypsum; anhydrite; plasters$18,880$10,782$23,149$18,197$18,866$13,412$131
Quicklime, slaked lime and hydraulic lime$16,650$5,820  $1$250 
Portland cement, aluminous cement, slag cement$315,520$319,186$683,670$2,469,060$72,264$785,310$963,877
Natural steatite, whether or not roughly trimmed $1,000  $1,438  
Felspar; leucite and nepheline syenite  $9,253 $9,599$18,714 
Mineral substances $74$691$759$117$575$125
Total$736,370$863,719$1,478,195$3,533,440$1,027,495$1,854,937$2,313,314