Sub-Chapter200520062007200820092011
Salt (including table salt)$3,260,917$3,229,082$3,649,307$3,931,038$3,923,754$4,413,718
Unroasted iron pyrites.    $4,105$1,788
Natural graphite.$64,455$349,260$1,089,438$1,125,026$583,170$1,262,218
Natural sands of all kinds$561,324$482,932$925,494$870,284$591,173$565,778
Quartz (other than natural sands); quartzite$24,026$38,033$66,883$161,447$64,257$9,984
Kaolin and other kaolinic clays, whether or not calcined.$1,991,256$976,624$1,456,709$1,678,283$867,856$756,670
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$301,317$258,038$258,657$357,689$260,643$207,120
Chalk.$40,874$67,155$184,614$19,072$133,744$222,480
Natural calcium phosphates  $223 $758 
Natural barium sulphate (barytes)$8,775$11,696$11,401$8,194$7,604$783
Siliceous fossil meals$131,868$85,055$107,971$125,243$88,213$70,476
Pumice stone; emery; other natural abrasives$2,459$10,579$5,618$6,981$19,422$26,984
Slate $1,309 $1,155$1,277$12,992
Marble, travertine, ecaussine and other stone$210,554$201,124$256,352$351,853$350,713$578,792
Granite, porphyry, basalt, sandstone and other stone$163,247$257,958$389,299$388,301$246,464$205,370
Pebbles, gravel, broken or crushed stone$104,090$53,202$45,367$217,719$147,755$199,389
Dolomite, whether or not calcined or sintered $1 $7,053$1,533 
Natural magnesium carbonate (magnesite)$429,857$1,680,476$8,527,814$8,101,365$5,648,277$3,687,826
Gypsum; anhydrite; plasters$282,771$240,102$268,065$307,309$275,455$258,254
Limestone flux; limestone $168 $1,894  
Quicklime, slaked lime and hydraulic lime$1,302,341$1,993,932$2,896,225$3,369,596$2,835,122$3,689,742
Portland cement, aluminous cement, slag cement$5,258,866$4,385,749$7,456,646$15,264,934$22,247,597$17,398,623
Mica, including splitings; mica waste.$19,012  $508$64 
Natural steatite, whether or not roughly trimmed$20,912$27,190$51,325$58,669$35,659$75,767
Felspar; leucite and nepheline syenite$90,338$84,080$127,256$132,904$192,675$294,753
Mineral substances$280,212$160,215$220,474$219,499$192,397$368,857
Total$14,549,471$14,593,960$27,995,138$36,706,016$38,719,687$34,308,364