The increase, which will bring total annual sales volumes to 13.8 million tonnes, comes on top of the half a million tonne output increase the company announced on June 7.
National Native Title Council says it has not been properly consulted over the bill's latest revisions, which risk further damage to cultural heritage.
Before choosing whether to spend a further $5.7bn to bring Jansen into production, BHP is looking into what port it would use to ship the fertilizer ingredient.
