Chile's power grid and major copper mines slowly came back online on Wednesday morning after a major outage hit the world's top producer of the metal, with power firms working to restore the system to full operation,

Chile declared a state of emergency and curfew across much of the country, including the capital Santiago, on Tuesday following a massive blackout possibly caused by electrical system failure, the

A major power outage in Chile has disrupted copper production at some of the world's largest mines, prompting a state of emergency.