Monsanto Reviews Mine Safety After Idaho Accident

April 24, 2013

Monsanto Co. mining officials are investigating the engineering and safety of the water treatment system at its new phosphate mine after a holding pond sprung a leak and dumped water and sediment into a nearby wetland.

Monsanto reported the March 29 failure to government officials, triggering a review of the water management system at the Blackfoot Bridge Mine near Soda Springs.

The breach occurred at a pond built to hold storm water and snow melt that collects at the site. The failure allowed an estimated 3 million gallons of water to leak from the pond.

The project was permitted in 2011. Monsanto has touted its mining plan for incorporating state-of-the-art engineering.

Environmentalists oppose activity in southeast Idaho’s phosphate patch due to concerns about selenium – a toxic mining byproduct.

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