Coal Resources Available for Development - A Methodology and Pilot Study
By Jane R. Eggleston1, M.
Devereux Carter1, and James C. Cobb2
1U.S. Geological Survey,
Reston, VA 20192, 2Kentucky Geological Survey, Lexington, KY.
Table 4. Technological restrictions to
underground mining, Matewan quadrangle
[Expressed as percentages of total]
| Bed is less than 28 in thick | 51.9 |
| More minable coal bed is within 40 ft above or below | 36.3 |
| Active or abandoned mine is within 40 ft above or below | 9.2 |
| Deep mine barrier pillars adjacent to previous mines | 1.6 |
| Beds deeper than 1,000 ft | 0.8 |
| Oil and gas wells | 0.2 |
| Total: 228 million short tons (23% of original coal) | |
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