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.
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.