Mexico mine spills 500,000 gallons of cyanide

A mine in northern Mexico spilled over a half-million gallons of a cyanide solution used in heap-leach gold mining, after heavy rains caused a retaining pond to overflow.

The accident occurred at the Proyecto Magistral mine in the northern state of Durango. Originally, a spokeswoman for the Toronto-based McEwen Mining Inc. said the company owned the mine, but later said that it owns a mine with a similar name in another state.

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