Sub-Chapter20052006200720082009
Salt (including table salt)$7,344$11,176$6,316$9,754$8,797
Natural graphite.    $17
Natural sands of all kinds$543$882$474$401$444
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$799$1,058$590$590$116
Chalk.$159$75$176$19$235
Natural calcium phosphates$41    
Pumice stone; emery; other natural abrasives$161$24$151$21$24
Granite, porphyry, basalt, sandstone and other stone$1,622$973$4,939 $6,601
Pebbles, gravel, broken or crushed stone$202,825  $47 
Natural magnesium carbonate (magnesite)   $1,970 
Gypsum; anhydrite; plasters$5,757$505$1,138$2 
Portland cement, aluminous cement, slag cement$440,199$436,507$679,531$638,165$824,970
Natural steatite, whether or not roughly trimmed $36$23$26 
Total$659,450$451,236$693,338$650,995$841,204