Sub-Chapter20052007200820092010
Salt (including table salt)$3,357,741$3,977,351$4,268,615$4,998,726$4,645,299
Unroasted iron pyrites.$1,594 $311$320 
Natural graphite.    $1,374
Natural sands of all kinds$2,719$28,074$7,999$57,929$18,845
Quartz (other than natural sands); quartzite$1,660   $11,278
Kaolin and other kaolinic clays, whether or not calcined.$164,126$256,299$161,090$277,080$139,088
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$130,280$178,521$431,524$50,124$51,393
Chalk.$41,007$78,344$32,801$38,968$34,014
Natural calcium phosphates $79,425$15,380$7,193 
Natural barium sulphate (barytes)$906 $1,481$2,329$10,440
Siliceous fossil meals$145,277$178,625$202,537$136,113$198,776
Pumice stone; emery; other natural abrasives  $56 $764
Marble, travertine, ecaussine and other stone$65,770$769$1,701$3,231$287
Granite, porphyry, basalt, sandstone and other stone$850$28,717$12,588$5,078 
Pebbles, gravel, broken or crushed stone$103,920$29,070$52,135$35,215$15,431
Dolomite, whether or not calcined or sintered  $22 $152
Natural magnesium carbonate (magnesite)$998 $1,471  
Gypsum; anhydrite; plasters$847,892$1,227,280$1,839,924$1,647,742$2,272,646
Limestone flux; limestone   $75,357 
Quicklime, slaked lime and hydraulic lime$345,923$841,915$2,118,194$3,362,903$7,479,596
Portland cement, aluminous cement, slag cement$48,342,468$57,473,024$68,822,685$69,698,071$73,747,958
Mica, including splitings; mica waste.$117    
Natural steatite, whether or not roughly trimmed$27,425$36,967$39,794$22,407$9,203
Natural borates and concentrates thereof  $4,242  
Felspar; leucite and nepheline syenite $12,168 $13,076$47,622
Mineral substances$61,508$184,084$403,401$397,200$385,053
Total$53,642,181$64,610,633$78,417,951$80,829,062$89,069,219