Southern Copper Corp said on Monday that a key plant it uses to produce copper in Peru would not fully restart for another three to five days while work is done on its tailings and railway infrastructure following heavy rains. Peru's environmental regulator OEFA has been investigating a potential tailings spill at Southern Copper's Cuajone mine, after being alerted by local residents of a "greenish solution" that started streaming into a nearby river. Southern Copper, one of the world's largest copper producers, said there was no tailings spill. The company said its operations, though, were being "seriously ... (full story)