Miner will try raising $600m first, which will allow it to finish sinking shafts and access the world's largest deposit of polyhalite, a type of fertilizer.

The Australian miner is still targeting 2019 to start Colluli potash project execution.

New report shows private funds raising money for investment in metals and mining came up empty in Q3 and so far this year commitments total a paltry $100m.

Investors have been awaiting a board decision on whether to go ahead with the $17 billion project for years.

The future of the company and its huge fertilizer project beneath the park were thrown into doubt last month, after Sirius’ $2.5 billion funding plan failed.

The world's largest miner is moving from keeping a social licence to creating value for its stakeholders.

The mining and metals sector is facing greater scrutiny from end consumers, demanding a transparent, ethical supply chain.