Also, like any significant changes to our energy mix, there is no way to simply shift to high quality black coal on any near term time scale. (vvattsupwiththat.blogspot.ru)
In order to become one with nature, they find their last place to stay in a bed, becoming fossils by being covered by black coal, the product of their labor. (bravermangallery.com)
Black coal generation is more expensive than brown, although slightly less polluting. (ramblingsdc.net)