Sub-Chapter20052006200720082009
Salt (including table salt)$638,031 $791,277$884,766$1,044,978
Natural sands of all kinds    $10,086
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$9,936$4,516$78,270$75,764$457
Chalk.$31   $6,969
Natural calcium phosphates  $168,061$74,140$70,743
Natural barium sulphate (barytes)$10,670    
Siliceous fossil meals$202,477 $36,133$56,349$109,770
Marble, travertine, ecaussine and other stone$2,698    
Granite, porphyry, basalt, sandstone and other stone    $2,465
Pebbles, gravel, broken or crushed stone   $30,995$20,257
Gypsum; anhydrite; plasters$12,478 $21,357$9,068$8,137
Quicklime, slaked lime and hydraulic lime$144,777 $175,960$129,833$278,194
Portland cement, aluminous cement, slag cement$3,460,548 $2,604,475$4,420,943$5,715,372
Mineral substances$943   $1,271
Total$4,482,589$4,516$3,875,533$5,681,858$7,268,699