|
| TABLE 2 | ||||||||
| ESTIMATED PRODUCTION OF CRUDE SILICON CARBIDE AND FUSED ALUMINUM | ||||||||
| OXIDE IN THE UNITED STATES AND CANADA1, 2 | ||||||||
| 2006 | 2007 | |||||||
| Quantity3, 4 | Value3 | Quantity3, 4 | Value3 | |||||
| Product | (metric tons) | (thousands) | (metric tons) | (thousands) | ||||
| Aluminum oxide, regular, abrasives5 | 10,000 | $1,500 | 10,000 | $1,700 | ||||
| Silicon carbide6 | 35,000 | 24,300 | 35,000 | 26,000 | ||||
| 1Data are rounded to no more than three significant digits. | ||||||||
| 2Yearend stock data are withheld to avoid disclosing company proprietary data. | ||||||||
| 3Owing to rounding, data do not match total quarterly Mineral Industry Surveys estimated data.� | ||||||||
| 4Quantities are rounded to the nearest 5,000 metric tons to avoid disclosing company proprietary data.��� | ||||||||
| 5Regular grade accounts for about 62% of total output, and high-purity material accounts for the | ||||||||
| remainder. | ||||||||
| 6Approximately one-half of the quantity and value consists of material for metallurgical and other� | ||||||||
| nonabrasive applications. | ||||||||
Source: United States Geological Survey Mineral Resources Program