Sub-Chapter2005200620072008200920102011
Salt (including table salt)$2,774$1,519$3,540$5,479$15,162$110,976$46,355
Unroasted iron pyrites.    $684  
Natural graphite.$120    $43,247 
Natural sands of all kinds$3,402$44,585$1,016$20,449 $1,779,787$972,735
Quartz (other than natural sands); quartzite      $6,293
Kaolin and other kaolinic clays, whether or not calcined.$1,957$660     
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$886 $13,888  $2,077$1,918
Chalk.   $399$12,032  
Natural barium sulphate (barytes)    $8,239$10,809$106,104
Pumice stone; emery; other natural abrasives $697     
Slate   $1,862  $5,612
Marble, travertine, ecaussine and other stone$18,926$15,261 $532  $2,582
Granite, porphyry, basalt, sandstone and other stone$20,327$1,117$822$2,117$3,434$10,229$4,287
Pebbles, gravel, broken or crushed stone$5,024$8,191$51,468$1,356$9,346 $29,101
Dolomite, whether or not calcined or sintered $710$3,085    
Natural magnesium carbonate (magnesite)   $148,590  $10,973
Gypsum; anhydrite; plasters$10,005$12,293$293 $13,659$2,011$2,968
Limestone flux; limestone      $201
Quicklime, slaked lime and hydraulic lime      $3,174
Portland cement, aluminous cement, slag cement$105,883$25,455 $3,923$10,673 $5,295
Mica, including splitings; mica waste.     $564$17,311
Natural steatite, whether or not roughly trimmed  $566$4,827 $6,388 
Felspar; leucite and nepheline syenite      $2,513
Mineral substances    $6,114$6,660 
Total$169,304$110,488$74,678$189,534$79,343$1,972,748$1,217,422