http://www.buenosairesherald.com/
Company’s own new figures show leak had been massively underestimated
The amount of cyanide solution that spilled from Barrick Gold’s Veladero mine in San Juan province is almost five times more than previously believed, the company acknowledged yesterday as a second federal prosecutor moved to investigate national and provincial officials and mining executives amid growing environmental concerns.
By Barrick’s own estimates, approximately 1,072 cubic metres (1.072 million litres) of cyanide solution made it into the Potrerillos River, due to a valve failure and a sluice gate being left open on September 12.
Previous upper estimates of the spill had been in the realm of 224,000 litres. The Canadian multinational chalked up the revised number to the pinpointing of the approximate time of the valve failure, believed to be around 8pm. The cyanide solution is used to leach gold from processed rocks, a common method for the extraction of gold from ore.
Despite the revised estimate, Barrick insists the spill will not lead to any health risks for area residents.