CONSOL Energy evacuated its Blacksville No. 2 Mine in Monongalia County Tuesday after detecting smoke coming from an air shaft.
All miners were evacuated and no one was hurt, according to company and mine officials.
Smoke was seen coming from the Orndoff Shaft in Greene County , Pa. The mine is located on the Pennsylvania and West Virginia border.
The U.S. Mine Safety and Health Administration issued a statement Tuesday saying there appeared to be a fire burning underground at the mine. A mine rescue team and backup team went underground to try to find the source of the flames, but withdrew after finding heat and smoke, MSHA said.
The crews were in heavy smoke and had to leave the underground mine, MSHA said. As of 5:25 p.m., no one was in the mine, according to MSHA.
Investigators are on the scene.