Category:Coal seams in the United States
Subcategories
This category has the following 12 subcategories, out of 12 total.
Media in category "Coal seams in the United States"
The following 6 files are in this category, out of 6 total.
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FEMA - 3846 - Photograph by Anita Westervelt taken on 08-24-2001 in West Virginia.jpg 2,100 × 1,575; 483 KB
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Preliminary report on the iron ores and coal fields from the field work of 1872 (IA preliminaryrepor00missrich).pdf 941 × 1,504, 694 pages; 70.78 MB
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Pyrite in bituminous coal (Pennsylvanian; eastern USA) (18858200370).jpg 1,062 × 680; 1.39 MB