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Tribes in the Mountain West reached resolutions in two long standing environmental disputes this week. The victories for the Shoshone-Bannock Tribes and...

The U.S. government settled a lawsuit Wednesday brought by the state of Utah over a mine waste spill caused by federal workers that sent wastewater downstream to several states from the inactive Gold King Mine in southwestern Colorado five years ago.

A mining company says it won't carry out cleanup work ordered by the U.S. Environmental Protection Agency as part of a Superfund project in southwest…

A gold company said the U.S. Environmental Protection Agency is mismanaging the Superfund cleanup of nearly 50 old mining sites in southwestern Colorado…

Every day, many millions of gallons of water loaded with arsenic, lead and other toxic metals flow from some of the most contaminated mining sites in the…

In early August three years ago, Barb Horn stood along the banks of the Animas River in the city of Durango, Colorado. Word had spread of a mine waste…

A truck hauling waste from a Colorado mine - the source of a 2015 spill that polluted rivers in three states- crashed into a creek on Monday, spilling at…

The U.S. Environmental Protection Agency has come up with an interim plan to hold back some of the toxic heavy metals that spill into rivers from old…