I'm hoping on buying a tractor trailer load of pea sized Anthracite coal this summer. Obviously I don't want 25 tons of poor quality coal, but I don't really know to contract for quality coal. Pennsylvania maps the anthracite mining region into four geographic fields, "Southern", "Western Middle", "Eastern Middle" and "Northern" Fields. In each there are underground coal mines and open surface mines. Is the quality of the coal different from the different coal fields? If so which is the best? Is there a difference in coal quality if it comes from a underground mine or a surface mine? Note, I'm talking about coal quality not how well the breaker or colliery processes it. I'm guessing but wouldn't underground mined coal have an advantage? Extracting coal just from a coal vein rather than stripping away everything and then trying to sort out just the coal. Since only a small fraction of the Anthracite mined is for residential heating does this market get the best or worst of the coal quality? How do you tell a good coal processor from a bad one? Any help would be appreciated.