I think it's Anthracite and Bituminous. Perhaps Bituminous is the same thing as Lignite? CJ > > > There are, as I understand it, two types of coal ; Hard Anthracite and the > softer variety which I think is known as Lignite. The value of Anthracite > is > that not only is it harder, but that the benifit of the hardness is that it > burns much hotter thus much more usefull in converting water to steam in > the > steam power era both of locomotives but also for steam ( coal) power > plants, > ect. > >