U.S.G.S. Open-File Report 95-595 - Chapter 2, Figure 6.

Coal Geology of the Paleocene-Eocene Calvert Bluff Formation (Wilcox Group) and the Eocene Manning Formation (Jackson Group) in east-central Texas

Edited by P.D. Warwick and S.S. Crowley

U.S. Geological Survey Open-File Report 95-595

Figure 6. Bar graphs showing the distribution of trace element concentrations (whole-coal basis) for 12 potential HAPs identified by the U.S. Clean Air Act Amendments of 1990. Location and lithologic description of samples are given in appendix I. Lithologic symbols are the same as used on figure 3. All values are parts per million (ppm).

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U.S. Department of the Interior, U.S. Geological Survey
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