Coal availability in the Hilight quadrangle, Powder River Basin, Wyoming: a prototype study in a western coal field
by Carol L. Molnia, Laura R. H. Biewick, Dorsey Blake, Susan J. Tewalt, M. Devereux Carter (US Geological Survey), and Charlie Gaskill (Bureau of Land Management)
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Figure 18. Chart showing land-use restrictions for the Main Wyodak coal bed (Category 1 restrictions). The chart segment for "Cemetery" is too small to be shown at this scale. Numbers in parentheses are in millions of short tons.  |
U.S. Geological Survey Open-File Report 97-469