The mine at Burnham was opened in the late 1970's to turn coal into natural gas and was closed in 1984.

Integrated-gasification is a process that turns coal into gas.

It was not a concept, like the alchemical one of turning coal into gold, that he could easily discard.

Outside, with the night finally turning coal black above her head, Tally instantly felt better.

Others are pushing huge subsidies to turn coal into gasoline, because they come from coal states.

His holdings include Sasol, an energy company that has developed methods to turn coal into liquid fuels.

By concentrating hard enough, she could turn coal into diamonds.

People have been turning coal into oil for 100 years or more, but researchers at UTA say they've invented a better way to do it.

Military's push to turn coal into fuel picking up speed (Associated Press)

That plant would turn coal to natural gas and then burn the natural gas.