Mineralogical investigation of coal mine roof shales in part of the southern Appalachian coal field

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dc.contributor.authorMeyertons, Carl Theileen
dc.contributor.departmentGeologyen
dc.date.accessioned2015-06-26T20:54:40Zen
dc.date.available2015-06-26T20:54:40Zen
dc.date.issued1955en
dc.description.abstractMany coal mines in southwestern Virginia and West Virginia are plagued with excessive deterioration of roof shales. Shale flakes and sheets spall off the roofs at unpredictable intervals and create hazards in many coal mines (P1.1). The failures are more frequent during the summer months when the incoming air is at a higher temperature than the roofs and walls of the mine. This differences in temperature causes the moisture of the air to condense on the cooler parts of the mine. Prof. C.T. Holland, Department of Mining Engineering, Virginia Polytechnic Institute, has suggested that this type of roof failure may depend upon some mineralogical or chemical change caused by the increase in moisture on the rooms of the mine. In addition to the weathering process, some roof shales are notoriously susceptible to failure in those places where ground-water seepage is prevalent. The failures caused by this type of situation at the entry of a mine are usually more predictable than those caused by weathering. The purpose of this investigation was to determine if there were any significant differences in the mineral, chemical, or textural compositions of roof rocks which have failed and those which have not.en
dc.description.degreeMaster of Scienceen
dc.format.extent76 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/53781en
dc.language.isoen_USen
dc.publisherVirginia Polytechnic Instituteen
dc.relation.isformatofOCLC# 7059245en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1955.M49en
dc.subject.lcshShale -- Appalachian Mountainsen
dc.subject.lcshCoal mines and mining -- Appalachian Mountainsen
dc.titleMineralogical investigation of coal mine roof shales in part of the southern Appalachian coal fielden
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineGeologyen
thesis.degree.grantorVirginia Polytechnic Instituteen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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