Mining continues at the Continental Pit. Nearby is the Berkeley Pit, a site for acid mine drainage that poses an opportunity ...

The U.S> is seeking to boost its domestic supply of rare earths and critical minerals, and researchers are looking at the ...

PHNX Materials has devised a way to strip fly ash of sulfur and aluminum, impurities that concrete companies would rather ...

Fortunately, the Indiana Department of Environmental Management said it didn’t receive any reports of damage to the state’s ...

In 2022, federal officials rebuked a major coal plant next to the Ohio River for letting coal waste — in a pile so big it could fill the Dallas Cowboys' football stadium twice over — threaten ...

Today, the U.S. Environmental Protection Agency (EPA) proposed to approve North Dakota’s coal combustion residuals (CCR or coal ash) program application, which would allow the state rather ...

That coal ash, the waste from burning coal, was at risk of leaching into groundwater and spreading toxins, officials said. It was part of a broad crackdown by the Biden administration on coal ash ...

Those closures have created a new industry in coal ash harvesting. Companies scour ash pits for quality fly ash, dig it up, do some light processing, and sell it to concrete companies. But not all ...