Generally, we rule that the shock endurance of the coal slime dryer barrel material inlet is more than 10 to 20 J/cm, and central barrel and the material outlet is more than 5 to 10 J/cm to ...

President Donald Trump is looking to give coal a lift with executive orders he inked on Tuesday. One order seeks to reclassify coal as a mineral and promote leasing on federal lands.

Coal may be "cleaner than ever," but it's still not "clean" energy, experts say. President Donald Trump signed an executive order on Tuesday to expand the mining and use of coal in the U.S ...

Currently, coal makes up about 16% of the electricity mix in the U.S., down from 50% two decades ago. As of this year, only about 41,000 Americans work in the coal industry.

Jobs in coal had been in decline decades before the wind turbines came to Keyser in 2012. Still, the turbines are a clear — and for some, bitter — sign that times have changed.