| Period | Alumina Grade | Reported Alumina Production (thousands of Metric Tons) |
| First Quarter 2008 |
Chemical | 218 |
| Metallurgical | 5,044 | |
| Total | 5,262 | |
| Second Quarter 2008 |
Chemical | 269 |
| Metallurgical | 5,598 | |
| Total | 5,867 | |
| Third Quarter 2008 |
Chemical | 244 |
| Metallurgical | 6,041 | |
| Total | 6,285 | |
| Fourth Quarter 2008 |
Chemical | 272 |
| Metallurgical | 5,098 | |
| Total | 5,370 | |
| Year 2008 |
Chemical | 1,003 |
| Metallurgical | 21,781 | |
| Total | 22,784 | |
| First Quarter 2009 |
Chemical | 155 |
| Metallurgical | 4,755 | |
| Total | 4,910 |
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