Upper Freeport Coal Bed Original Resources by County in Pennsylvania, Ohio, West Virginia, and Maryland
收藏DataONE2016-10-29 更新2024-06-26 收录
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资源简介：
This dataset is a polygon coverage of counties limited to the extent of
the Upper Freeport coal bed resource areas and attributed with original
resources (millions of short tons) in aggregated reporting categories as described
in USGS Circular 891. The file has been generalized from detailed geologic
coverages found elsewhere in Professional Paper 1625-C.
创建时间：
2016-12-01
