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| TABLE 2 | |||||||||
| ESTIMATED PRODUCTION AND SHIPMENTS OF ALUMINA | |||||||||
| IN THE UNITED STATES1 | |||||||||
| (Thousand metric tons) | |||||||||
| Total | |||||||||
| Calcined� | Other | As produced | Calcined | ||||||
| Year | alumina | alumina2 | or shipped3 | equivalent | |||||
| Production: | |||||||||
| 2006 | 4,610 | 618 | 5,230 | 4,700 | |||||
| 2007 | 3,770 | 717 | 4,490 | 3,890 | |||||
| Shipments: | |||||||||
| 2006 | 4,580 | 564 | 5,150 | 4,670 | |||||
| 2007 | 3,770 | 667 | 4,440 | 3,890 | |||||
| 1Data are rounded to no more than three significant digits.�� | |||||||||
| 2Trihydrate, activated, tabular, and other aluminas. Excludes calcium and��� | |||||||||
| sodium aluminates.�� | |||||||||
| 3Includes only the end product if one type of alumina was produced and��� | |||||||||
| used to make another type of alumina.�� | |||||||||
Source: United States Geological Survey Mineral Resources Program