| Period | Alumina Grade | Reported Alumina Production (thousands of Metric Tons) |
| First Quarter 2009 |
Chemical | 155 |
| Metallurgical | 4,755 | |
| Total | 4,910 | |
| Second Quarter 2009 |
Chemical | 245 |
| Metallurgical | 5,455 | |
| Total | 5,700 | |
| Third Quarter 2009 |
Chemical | 240 |
| Metallurgical | 5,902 | |
| Total | 6,142 | |
| Fourth Quarter 2009 |
Chemical | 257 |
| Metallurgical | 6,783 | |
| Total | 7,040 | |
Year 2009 |
Chemical | 897 |
| Metallurgical | 22,895 | |
| Total | 23,792 | |
| First Quarter 2010 |
Chemical | 243 |
| Metallurgical | 7,134 | |
| Total | 7,377 |
(*=Revised Figures)
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