Sub-Chapter200520062007200820092010
Salt (including table salt)$73,584$85,807$90,320$90,680$99,416$137,475
Unroasted iron pyrites.   $15 $68
Natural graphite.$9$253 $4,355 $116
Natural sands of all kinds$165,043$196,682$372,825$356,036$522,891$740,137
Quartz (other than natural sands); quartzite  $3,841 $3 
Other clays (not including expanded clays of heading 68.06), andalusite, ky ...$1,863$2,910$2,356$3,608$1,234$1,925
Chalk.$3,502$370$663$461$136$193
Natural calcium phosphates $37$58   
Natural barium sulphate (barytes)$12     
Siliceous fossil meals$12,179$8,949$15,988$9,675$28,603$16,203
Pumice stone; emery; other natural abrasives$13$533$8,347$683$33$68
Slate    $38,113$7,042
Marble, travertine, ecaussine and other stone$6,935$1,894$25,690$3,337$6,087$18,186
Granite, porphyry, basalt, sandstone and other stone$348$3,275$58,249$103,696$33,362$88,534
Pebbles, gravel, broken or crushed stone$291,395$249,763$327,168$395,096$331,490$186,858
Natural magnesium carbonate (magnesite)   $94$86 
Gypsum; anhydrite; plasters$5,839$18,025$56,707$149,645$54,555$91,045
Limestone flux; limestone$20,787$14,306$42,796$148,598$59,809$40,652
Quicklime, slaked lime and hydraulic lime$5,354$1,238$2,586$8,818$22,714$22,428
Portland cement, aluminous cement, slag cement$4,674,717$7,677,549$10,181,826$9,389,077$8,796,948$7,160,312
Asbestos.     $134
Mica, including splitings; mica waste.   $244  
Natural steatite, whether or not roughly trimmed$167$149$591$435$123$82
Natural borates and concentrates thereof$11$27 $137 $9
Felspar; leucite and nepheline syenite$114$85    
Mineral substances$788 $7$1,939$44$142
Total$5,262,660$8,261,852$11,190,018$10,666,629$9,995,647$8,511,609