The U.S. Environmental Protection Agency plans to drill a test well into an inactive mine tunnel in southwestern Colorado to get information for a Superfund cleanup, the agency said Friday. The EPA said it will drill into the American Tunnel next month to measure water levels and investigate how the passage is connected to other shafts. ... The agency designated the Superfund site after it inadvertently ( LOL ) triggered a spill while doing excavation work at the inactive Gold King Mine in August 2015. The spill released 3 million gallons of wastewater, polluting rivers in Colorado, New Mexico and...