A miner transports a steel sheet inside the copper cathodes plant at the La Escondida copper mine near Antofagasta, about 1545 km (980 miles) north of Santiago city and 3100 meters (10,170 feet) above sea level, March 31, 2008. Smoke and debris rocket into the air, then the ground shakes as far as 600 meters away. Seconds later, a boom rings out as explosives pulverize 190,000 tonnes of rock near the base of Chile's Andes mountains. Picture taken March 31, 2008. To match feature COPPER-CONFERENCE/ESCONDIDA. REUTERS/Ivan Alvarado (CHILE)