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Work underway to put out mining fire that’s burned for more than 20 years

The blaze started decades ago when an old pile of coal waste spontaneously combusted, according to the Colorado Division of Reclamation, Mining and Safety. The smoldering 35-foot-high, footb...

Bill to clean up thousands of abandoned mines passes Congress

Good Samaritan law will empower states, nonprofits to tackle abandoned sites

In La Plata Mountains, possibility of copper mining has neighbors anxious

Metallic Minerals faced stiff opposition at a community meeting in Breen

Why did it take so long for the Navajo Nation to secure a Superfund designation?

Waste from 40 years of uranium mining has contaminated watersheds across the reservation

Locals wary of plan to recycle Leadville’s mining waste

Residents concerned plan to process historic mine waste could threaten Arkansas River, unearth town’s long-buried history

What was the social impact of Gold King?

Environmentally, the spill was negligible. But seeing a mustard-yellow river spurred action to clean up mines

Silver dream goes bust: Ouray mine faces lawsuits for $10M in unpaid bills

After big plans to revive famed Revenue Mine, owners shut down and are in receivership

Bulkheads caused the Gold King Mine spill. Could they also be part of the solution?

Remediation tool can limit acidic drainage, but experts must also understand the complicated hydrology

New legislation would address abandoned mine pollution in Southwest Colorado

Conservation groups, nonprofits and local governments could finally join remediation efforts

$90 million settlement reached to pay for mine cleanup near Silverton

Deal helps resolve liability issues around 2015 Gold King Mine spill

Mining claims in Weminuche Wilderness protected from development

Conservation group buys inholdings to preserve wilderness setting

Lawsuit seeks to close GCC Energy’s King II coal mine

Conservation groups say more thorough water study will show excavation unsafe