Sub-Chapter200520062007
Salt (including table salt)$819,071$858,072$804,431
Natural graphite.$10,070$25,423$10,263
Natural sands of all kinds$541,115$615,822$932,350
Quartz (other than natural sands); quartzite$380$3,069$3,431
Kaolin and other kaolinic clays, whether or not calcined.$106$375 
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$461,359$901,628$722,742
Chalk.$19,548$13,795$13,833
Natural calcium phosphates $2,006$47,640
Natural barium sulphate (barytes) $16,651$114
Siliceous fossil meals$916$10,420$12,193
Pumice stone; emery; other natural abrasives$49,605$5,649$1,521
Slate$2,336  
Marble, travertine, ecaussine and other stone$21,000$300,516$21,301
Granite, porphyry, basalt, sandstone and other stone$25,792$531,574$22,538
Pebbles, gravel, broken or crushed stone$79,911$95,547$86,874
Dolomite, whether or not calcined or sintered$407  
Natural magnesium carbonate (magnesite)$35,360$47,420$93,924
Gypsum; anhydrite; plasters$340,911$278,905$353,375
Limestone flux; limestone$40,323$4,101$17,109
Quicklime, slaked lime and hydraulic lime$115,161$101,813$107,844
Portland cement, aluminous cement, slag cement$8,529,974$11,609,476$21,530,890
Asbestos.$60,436$51,781$96,958
Natural steatite, whether or not roughly trimmed$29,430$41,488$4,409
Natural borates and concentrates thereof$2,857$14 
Mineral substances$47,397$126,721$136,372
Total$11,233,465$15,642,266$25,020,112