NexGen Energy Ltd. (NXE:TSX; NXE:NYSE.MKT) announced its maiden preliminary economic assessment (PEA) of the "basement-hosted" Arrow Deposit on July 31.
BHP Billiton is looking for ways to shore up power supply and bring down power costs at its Olympic Dam copper mine in Australia, as it plans to expand following a string of electrical outages, the mine's head said on Friday.