Queensland's bigger-than-expected hike in coal royalties could embolden other Australian states and resources-heavy countries around the world to make similar moves.

Piedmont's first steps toward securing lithium supplies will be in Quebec or Ghana.

Its Rio's first greenfield mine in the Pilbara in more than a decade and a multi-billion-dollar investment.

The dam elimination program has already cost the company $857 million of the $4 billion it projects to spend by 2035.

A judge scheduled a conciliation hearing between the company and its creditors on Tuesday as the parties offered competing debt restructuring plans.

In submissions to the inquiry last year, top miners acknowledged that sexual harassment is rife at mining camps in Western Australia.

Brazilian steelmaker CSN hired restructuring firm RK Partners to draft a proposal to buy control of Samarco.

The United States and Britain have imposed sanctions on Russia's Alrosa, the world's largest producer of rough diamonds, which accounted for around 30% of global output last year, and is partly state-owned.