Murray’s companies fought against safety rules meant to prevent the fatal disease. He ran the largest privately-owned underground coal mining company in the US.
Researchers found elevated levels of radioactivity on air particles measured downwind of fracking sites around the country. They say health effects are possible, though not imminent.
An NPR investigation into the regulatory failures — and the human costs, including to Pennsylvania miners — of a disease that has been described as "suffocating while alive."
