A study of the mineralogy of roof and floor strata associated with coal mines
<p>The first conclusion that can be drawn from these results is the extreme variation in the size distribution of the particles of the material. Table nine shows the maximum, average and minimum percentes of each size found in the roof shales, and table ten shows the same factors for the f...
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| Format: | Others |
| Language: | en |
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Virginia Tech
2014
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| Online Access: | http://hdl.handle.net/10919/44671 http://scholar.lib.vt.edu/theses/available/etd-09082012-040426/ |