Pittsburgh Coal Bed County Statistics (Chemistry) in Pennsylvania, Ohio, West Virginia, and Maryland

This dataset is a polygon coverage of counties limited to the extent of
the Pittsburgh coal bed 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. The file has been generalized from
detailed geologic coverages found elsewhere in Professional Paper
1625-C. The attributes were generated from public data found in the
geochemical dataset found in Chap. C, Appendix 8, Disc 1, as well
as some additional proprietary data. Please see the metadata file found
in Chap. C, Appendix 9, Disc 1, for more detailed information on
the geochemical attributes. The county statistical data used for this
data set are found in Tables 2-5 and 17-18, Chap. C, Disc 1. Additional
county geochemical statistics for other parameters are found in Tables
6-16, Chap. C, Disc 1.