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Five years after Gold King Mine spill, water quality remains a concern

For a few days in August 2015, invisible mining pollutants could be seen by the world

EPA proposes permanent mine waste dump site north of Silverton

Project needs approval from Sunnyside Gold, a company potentially on hook for costs

EPA will temporarily plug ‘bad boy’ mine near Silverton

Experiment will help agency understand region’s hydrology, evaluate long-term solution

Owner of Gold King Mine not happy with proposed cleanup solution

Local groups call for plugging of discharging mines

BLM removes mine waste leaching into Animas River

About 2,500 cubic yards of contaminated material relocated

EPA looks to develop road map for mine cleanup around Silverton

What’s the best way to approach improving water quality in the Animas River?

Water samples show no impact from Silver Wing Mine spill

EPA says it is unclear what caused temporary uptick in discharges

EPA: Mine spilling waste into Animas River returns to normal

Agency says water sample results should be available next week

Animas River Stakeholders disband after 25 years of cleanup efforts

Group’s role fell into doubt after Superfund established outside Silverton

EPA names new lead for Bonita Peak Mining District Superfund site

Christina Progess at helm of cleanup around Silverton

Where to store sludge? Sunnyside Gold offers site to the EPA

Water-treatment plant produces 4,600 cubic yards of waste byproduct per year

EPA drills into American Tunnel to unravel mine pollution mystery

Driven by desire to know what lies beneath, crews bore deeper every day