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U.S. Imports Of Crushed Stone And Calcium Carbonate Fines, By Type

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TABLE 18
U.S. IMPORTS OF CRUSHED STONE AND CALCIUM CARBONATE FINES, BY TYPE1
 
    2006   2007
Quantity Quantity
(thousand) Value, c.i.f.2 Unit (thousand) Value, c.i.f.2 Unit
Type   metric tons)   (thousands)   value   metric tons)   (thousands)   value
Crushed stone and chips:
Limestone 9,180 $72,200 $7.87 9,510 $72,700 $7.64
Limestone for flux or cement manufacturing 3,270 32,000 9.78 2,870 31,100 10.83
Quartzite 21 3,090 147.14 -- -- --
Other 7,350 98,100 13.34 7,120 107,000 15.04
Total or average 19,800   205,000   XX   19,500   211,000   XX
Calcium carbonate fines:3
Natural chalk (4) 15 66.67 7 228 32.57
Calcium carbonates, other chalk 1 456 533.96 1 1,170 971.71
Total or average 1   471   XX   8   1,400   XX
Grand total or average   19,800 206,000 XX   19,500 212,000 XX
-- Zero. XX Not applicable.���
1Data are rounded to no more than three significant digits, except unit value; may not add to totals shown.
2Cost, insurance, and freight value.
3Excludes precipitated calcium carbonate.
4Less than unit.
Source: U.S. Census Bureau.

Source: United States Geological Survey Mineral Resources Program


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