A study of the mineralogy of roof and floor strata associated with coal mines

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dc.contributor.authorFisher, Frank Tasmanen
dc.contributor.committeechairHolland, Charles T.en
dc.contributor.committeememberNelson, B. W.en
dc.contributor.departmentMining Engineeringen
dc.date.accessioned2014-03-14T21:45:13Zen
dc.date.adate2012-09-08en
dc.date.available2014-03-14T21:45:13Zen
dc.date.issued1961-07-25en
dc.date.rdate2012-09-08en
dc.date.sdate2012-09-08en
dc.description.abstractThe 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 percents of each size found in the roof shales, and table ten shows the same factors for the floor clays. From the reported answers to question A we can also see the wide range of opinion concerning roof shales. Of those materials classed as slate, the sand size varied from 1 to 64 percent, while the material reported as draw-slate fell between these limits with a range of sand size from 3 to 38 percent.en
dc.description.degreeMaster of Scienceen
dc.format.extent71 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-09082012-040426en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09082012-040426/en
dc.identifier.urihttp://hdl.handle.net/10919/44671en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1961.F573.pdfen
dc.relation.isformatofOCLC# 22677740en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1961.F573en
dc.subject.lcshCoal mines and mining -- Researchen
dc.titleA study of the mineralogy of roof and floor strata associated with coal minesen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineMining Engineeringen
thesis.degree.grantorVirginia Polytechnic Instituteen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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