Use of Vertical Boreholes for Assisting Ventilation of Longwall Gob Areas
Public Domain
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03/01/1969
Details
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Description:An experimental degasification program using a vertical borehole and vacuum pump to drain gas from the gob area of a longwall panel was successful at Bethlehem Mines Corporation, Cambria Division, No. 33 coal mine. Sixty-one million cubic feet of methan...
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NIOSHTIC Number:nn:na
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Main Document Checksum:urn:sha-512:422b5f5027237a7d159b204638ecbdaf5b5a50e59b041e24575f13df9b83e840ead18ee8d824e120502ea434036de9c3b685a2721f42f081d7325dc32147032b
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[PDF
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