An administrative law judge has upheld a citation against a Patriot Coal Corp. subsidiary for waiting four days to report a roof collapse at a mine in West Virginia, The Associated Press reports.

Researchers have investigated roof collapses in retained top coal roadways caused by high-energy seismic events (HESEs) in deep coal mines. A recent study conducted in the Binchang mining area, ...

TEL AVIV (MarketWatch) -- Consol Energy, the Pittsburgh coal producer, swung to a third-quarter loss from a year-earlier profit because of sales that were lost when a roof collapsed and idled a mine.