Poland’s KGHM sees extra viable mining pits at its biggest mine in Chile

GDANSK, May 18 (Reuters) - Poland's largest ore miner KGHM Polska Miedz KGH.WA can verify four more viable mining pits in its flagship Sierra Gorda copper and molybdenum mine in Chile, vice president of the company's management board for international assets Miroslaw Kidon said on Thursday. "We can verify and identify another four pits, which are of similar size to our current pit," said Kidon on a conference call. He added that the company and a team of geologists suspected the newly identified pits might be in reality "one big super-pit". Sierra