Coal — the rock, not the roll — is one of the dirtier fuel sources out there, with both mining and burning it often leading to serious medical complications for those involved. Now, though ...

In coal-rock formations, many micro-fractures exist, and the expansion of these micro-fractures is the internal catalyst for the macroscopic destruction of coal-rock. Moreover, the occurrence ...

U.S. coal consumption last year dropped to its lowest level since 1978, according to the U.S. Department of Energy. Demand for other energy sources, particularly natural gas, is taking market ...

In the US, coal mining is a shrinking industry. In 1923, there were about 883,000 coal miners; today there are about 53,000.; Working in coal mines is dangerous — miners have to deal with toxic ...

When the project is finished, the excavation team will have moved 182,000 cubic yards of material, which is about 72,000 pickup-truck loads of coal, rock and dirt.

The Labor Department announced Tuesday it has issued a new federal rule on miners' safety; the rule cuts down the permissible exposure limit for crystalline silica, linked to black lung disease.

COAL VALLEY — A rock hunt has begun in Coal Valley, with people painting stones and hiding them to bring a little joy to those who find them. About two weeks ago, Kalyn Bonjour, of Coal Valley ...

In the 1980s, Berggren participated in a statewide inventory that mapped more than 60 of the shale piles, and he came to regard the man-made mountains as “as conspicuous monuments on the plain.” ...