2008 estimate of 7.7 million tonnes.

Crusader said the average grade at Posse was 43.5 per cent and the mineralisation was easily upgradeable to smelter grade, the Perth-based miner said in a statement on Monday.
The miner said it had increased the iron ore resource after remodelling the geology and extending the inferred resource boundary.
The company says there are now 4.83 million tonnes of indicated iron ore at 47.39 per cent average grade and 31.18 million tonnes of inferred deposits at a 42.89 per cent grade.
"The large upgrade to the resource inventory at Posse highlights the potential for a viable mining operation with a much longer life," Crusader chief executive Rob Smakman said in the statement.
"Our focus has always been to confirm sufficient, near-surface, high-grade resources to start mining at Posse.
"A larger resource means we can expand the longer term potential of the project."
Crusader aims to conclude a scoping study and secure the necessary permits to begin mining at the project in central Brazil