Investigation finds Samarco dam failed due to liquefaction
August 29, 2016 at 14:56 PM EDT
BELO HORIZONTE, Brazil, Aug 29 (Reuters) - An investigation launched by Brazilian miner Samarco, and its owners Vale SA and BHP Billiton, into the cause of a dam spill last November found the dam collapsed due to liquefaction, a presentation said on Monday.
