Coal Mining (1978) / Chapter Skim
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APPENDIX A: AREAS OF RELATIVE SIMILARITIES OF RECOVERABLE RESERVES
APPENDIX A: AREAS OF RELATIVE SIMILARITIES OF RECOVERABLE RESERVES
Pages 65-72
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From page 66... ...
The prevailingly steep ridge-and-valley topography of southern West Virginia serves to separate regaining reserves that outcrop above drainage levels into areas of highly variable shapes and extents. Where they occur below drainage, the remaining reserves may be more extensive but also more difficult to reach and the high ridges create substantial depths of cover.
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From page 67... ...
The coal beds in northern Tennessee are sinilar to those in the southwestern portions of eastern Kentucky in that they lack continuity and are irregular in minatle extent. The reserves in southern Tennessee and Alabama partially occur in fields where the beds dip steeply froir their outcrops and partially where they are relatively flat.
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From page 68... ...
While production from surface mines has decreased somewhat in Illinois in the past six years and increased irregularly in Indiana and western Kentucky during the same period, it seems likely that this method of mining has reached a general plateau and that chances for iraterial increases are slight. Insofar as surface mining of the principal beds is concerned, remaining surface-minable reserves are probably only those generally in areas of presently active surface operations.
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From page 69... ...
Future production consequently will have to come from deeper, thinner, or less readily accessible beds. There has been virtually no production froir surface mines in Utah while that in Colorado has slowly increased during the past six years.
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From page 70... ...
Recoverable underground reserves in New Mexico primarily occur in the western and northeastern portions of the state where moderate amounts have been produced for many years. Intensive exploration in recent years has revealed the presence of large amounts of surface-minable reserves around the western and southern preimeters of the San Juan basin in northwestern New Mexico (probably somewhat greater than the 2.43 billion tons listed in Table 1)
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From page 71... ...
The numerous coal beds vary widely in occurrence and thickness with some ranging up to 50 feet thick. The largest field is located in the northern roost portion of the state, but there has been considerable interest during the past several years in some of the southern fields from which production could be transported to comparatively ice-free ports for ocean shipirent.
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