Roughly 10,800 tons of toxic material from the “Two Gentlemen” mine in the northern Mexican state of Sinaloa leaked into the Chupaderos stream, which flows into the Baluarte River in the town of Concordia, local authorities reported Friday.
State and federal authorities have taken emergency measures to prevent wastes pollutants from contaminating ground water and affecting inhabitants of the region.
According to officials a retention dam was breached at the mine which primarily extracts gold and silver.
The Federal Attorney for Environmental Protection (Profepa), said the discharge of the the toxic materials occurred Thursday morning due to a "collapse . . .