Drilling fluid, often called drilling mud, is typically a slurry of fresh water mixed with bentonite clay and small amounts ...

Experience the thrill of exploring an underground coal mine in Pennsylvania, a bucket-list adventure full of history.

Beneath parts of the Appalachian Mountains, thousands of mine shafts still descend deep into the earth. Some of these vertical passages drop more than 1,000 feet, connecting long corridors carved ...

Add Yahoo as a preferred source to see more of our stories on Google. As the September evening inched along, the line of residents waiting their turn for the microphone held steady. Filing down the ...

Homer City Generating Station's remaining smokestack, April 3, 2025. The site will be cleared for a natural gas power plant and data center. On a Saturday morning in March, a demolition crew took down ...

A $10 billion natural gas-powered data center to serve the surging demands of artificial intelligence is being planned for the site of a former coal-fired power plant in Pennsylvania. The data center ...

A coal seam is visible at an abandoned mine site in Clearfield County, Pa. A bill aimed at averting another government shutdown this month would divert $500 million for states and tribal governments ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. Swaths of Pennsylvania and many other states ...

As the September evening inched along, the line of residents waiting their turn for the microphone held steady. Filing down the auditorium aisles at the Indiana University of Pennsylvania, they were ...