Pocahontas No. 3 Coal Bed County Statistics (Chemistry) in West Virginia and Virginia

This dataset is a polygon coverage of counties limited to the extent of the Pocahontas No. 3 coal bed resource areas and attributed with statistics on these coal...本数据集为限定于波卡洪塔斯3号（Pocahontas No. 3）煤层资源区范围的郡县多边形覆盖层，其属性包含该类煤炭相关统计信息……