Fire Clay Coal Zone County Statistics (Chemistry) in
Kentucky, West Virginia, and Virginia
This dataset is a polygon coverage of counties limited to the extent of
the Fire Clay coal zone resource areas and attributed with statistics
on these coal quality parameters: ash yield (percent), sulfur (percent),
SO2 (lbs per million Btu), calorific value (Btu/lb), arsenic (ppm)
content and mercury (ppm) content. …