|
| TABLE 4 | |||||||||||||||
| BENTONITE SOLD OR USED BY PRODUCERS IN THE UNITED STATES, BY TYPE AND USE1 | |||||||||||||||
| (Thousand metric tons and thousand dollars) | |||||||||||||||
| 2006 | 2007 | ||||||||||||||
| Quantity | Value | Quantity | Value | ||||||||||||
| Type: | |||||||||||||||
| Nonswelling | 260 | 11,800 | 219 | 11,100 | |||||||||||
| Swelling | 4,680 | 223,000 | 4,600 | 241,000 | |||||||||||
| Total | 4,940 | 236,000 | r | 4,820 | 252,000 | ||||||||||
| Us | |||||||||||||||
| Domestic: | |||||||||||||||
| Pet waste absorbents | 1,060 | NA | 1,030 | NA | |||||||||||
| Adhesives | 6 | NA | 8 | NA | |||||||||||
| Animal feed | 110 | NA | 121 | NA | |||||||||||
| Drilling mud | 1,030 | NA | 912 | NA | |||||||||||
| Filler and extender applications2 | 69 | NA | 83 | NA | |||||||||||
| Foundry sand | 672 | NA | 562 | NA | |||||||||||
| Pelletizing (iron ore)3 | 662 | NA | 677 | NA | |||||||||||
| Waterproofing and sealing | 162 | NA | 139 | NA | |||||||||||
| Miscellaneous civil engineering | 313 | NA | 301 | NA | |||||||||||
| Miscellaneous4 | 39 | r | NA | 128 | NA | ||||||||||
| Total | 4,120 | NA | 3,960 | NA | |||||||||||
| Exports: | |||||||||||||||
| Drilling mud | 120 | NA | 204 | NA | |||||||||||
| Foundry sand | 267 | NA | 246 | NA | |||||||||||
| Other5 | 433 | r | NA | 404 | NA | ||||||||||
| Total | 820 | r | NA | 854 | NA | ||||||||||
| Grand total | 4,940 | 236,000 | r | 4,820 | 252,000 | ||||||||||
| rRevised. NA Not available.� | |||||||||||||||
| 1Data are rounded to no more than three significant digits; may not add to totals shown. | |||||||||||||||
| 2Includes asphalt tiles, asphalt emulsions, cosmetics, fertilizers, ink, medical, miscellaneous fillers and extenders�� | |||||||||||||||
| applications, paint, paper coating, paper filling, pesticides and related products, pharmaceuticals, and plastics. | |||||||||||||||
| 3Excludes shipments to Canada. Total sales in North America were 730,000 metric tons (t) in 2006 and�� | |||||||||||||||
| 745,000 t in 2007. | |||||||||||||||
| 4Includes ceramics, chemical manufacturing, clarifying and decolorizing, heavy clay products, oil and grease� | |||||||||||||||
| absorbents, refractories, and other unknown uses. | |||||||||||||||
| 5Includes absorbents, fillers and extenders, refractories, pelletizing, and other unknown uses. | |||||||||||||||
Source: United States Geological Survey Mineral Resources Program