Sub-Chapter200520062007200820092010
Salt (including table salt)$3,857,389$6,736,683$2,538,719$3,535,927$6,090,441$10,273,187
Unroasted iron pyrites.  $11$2  
Natural graphite. $882  $1,338$2,632
Natural sands of all kinds$3,798,707$4,070,190$4,604,389$3,357,030$2,113,726$1,604,933
Quartz (other than natural sands); quartzite$1,300$1,736$209$2,000$4 
Kaolin and other kaolinic clays, whether or not calcined.$1,089,666$1,483,066$3,234,576$4,103,827$2,241,246$3,074,312
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$3,893,208$4,241,062$5,515,027$7,452,758$5,231,553$5,580,876
Chalk.   $2,943$152 
Natural calcium phosphates$517,522,714$545,213,480$711,983,973$2,305,623,151$554,349,431$1,066,957,061
Natural barium sulphate (barytes)$17,134,907$27,687,123$29,853,185$41,454,428$32,765,660$51,666,800
Siliceous fossil meals$23 $122   
Pumice stone; emery; other natural abrasives$2,434$16,084$18,729$26,447$29,997$61,234
Marble, travertine, ecaussine and other stone$6,296,437$7,518,246$9,683,303$10,466,727$8,135,030$7,791,286
Granite, porphyry, basalt, sandstone and other stone$382,651$150,007$485,454$200,966$97,416$114,420
Pebbles, gravel, broken or crushed stone$981,227$1,009,412$1,269,141$707,731$1,433,002$449,677
Natural magnesium carbonate (magnesite)$71,465$2,713  $108$76
Gypsum; anhydrite; plasters$5,356,317$5,727,265$6,630,486$7,932,657$5,260,842$5,977,572
Limestone flux; limestone  $414$130  
Quicklime, slaked lime and hydraulic lime$84,871$68,757$325,595$56,918$148,951$73,648
Portland cement, aluminous cement, slag cement$9,093,895$3,825,738$830,188$31,805$1,047,939$1,476,782
Natural steatite, whether or not roughly trimmed$69 $375$2,674$7,844$301
Natural borates and concentrates thereof $5,414    
Felspar; leucite and nepheline syenite$13,358,326$18,849,069$16,235,351$15,130,935$17,296,336$17,587,704
Mineral substances$1,751,109$1,736,410$1,051,585$2,152,235$2,101,059$1,244,174
Total$584,676,715$628,343,337$794,260,832$2,402,241,291$638,352,075$1,173,936,675