Sub-Chapter200520062007200820092010
Salt (including table salt)  $494$47,160 $1
Natural sands of all kinds$33,571 $2,484,513$117,596,752$34,825,179$595,436
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$1  $6,835$301 
Natural calcium phosphates     $5,168
Granite, porphyry, basalt, sandstone and other stone$38,481$999$1,007$5,135$3,632$11,457
Pebbles, gravel, broken or crushed stone  $2,572   
Limestone flux; limestone   $1,053  
Portland cement, aluminous cement, slag cement  $701$172  
Mineral substances $1,261$1,999$1,570$4,012$226
Total$72,053$2,260$2,491,286$117,658,677$34,833,124$612,288