The union has requested a one-time signing bonus equivalent to "1% of dividends paid to the mine's owners".

Juniors can unlock value at brownfields copper deposits.

Copper prices rebounded as investors scooped up material at lower prices after heavy losses the previous day on fears that strong US economic data could spur tighter monetary policy.

A contractor's employee was hit in the leg by a loose rock while working at one of the working faces, causing him to fall backwards and strike his head on a rock.

Taseko says it is in a strong financial position to internally fund construction of the $227 million Florence Copper project in Arizona.

Iron ore's big three shielded from worst of corrrection as steelmaking ingredient holds above $200 a tonne.

China's appetite for overseas metal seems to be fading, with Yangshan copper import premiums falling to $28.50 a tonne, the lowest since at least 2012.

At stake is the future of Noront's early-stage Eagle's Nest deposit, billed by Wyloo as the largest high-grade nickel discovery in Canada since Voisey's Bay.