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Mining Publication: Use of Vertical Boreholes for Assisting Ventilation of Longwall Gob Areas
Keywords: Boreholes Degasification Longwall panels Pumps Ventilation
This page is archived for historical purposes and is no longer being maintained or updated. Contact NIOSH Mining if you need an accessible version.
Original creation date: March 1969
Authors: CH Elder
Reference - March 1969
Download PDF Document (0.78 MB)
NIOSHTIC2 Number: 10000105
U.S. Department of the Interior, Bureau of Mines. Technical Progress Report 13, 1969; :1-6
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 methane has been exhausted during a 9-month period. Daily production time in the panel increased as a result of lower methane levels in the returns. Removal of large quantities of methane in this way and the exclusion of it from the ventilating system will provide reduced cost in mine ventilation and provide a safer environment for the mine.
Image of publication Use of Vertical Boreholes for Assisting Ventilation of Longwall Gob AreasReference - March 1969
Download PDF Document (0.78 MB)
NIOSHTIC2 Number: 10000105
U.S. Department of the Interior, Bureau of Mines. Technical Progress Report 13, 1969; :1-6
See Also
Coal Mine Methane: A Review of Capture and Utilization Practices with Benefits to Mining Safety and to Greenhouse Gas Reduction
Comparisons Between Cross-Measure Boreholes and Surface Gob Holes
Determining the Source of Longwall Gob Gas: Lower Kittanning Coalbed, Cambria County, PA
Hydraulic Stimulation of a Surface Borehole for Gob Degasification
Investigation of Longwall Face Ventilation Air-Splitting Methods for Improved Dust Control
Methane Control for Underground Coal Mines
Methane Drainage: Experience With Hydraulic Stimulation Through Slotted Casing
A Numerical Evaluation on the Effects of Impermeable Faults on Degasification Efficiency and Methane Emissions During Underground Coal Mining
Rotary Drilling Holes in Coalbeds for Degasification
Three Coal Mine Gob Degasification Studies Using Surface Boreholes and a Bleeder System
Page last reviewed: September 21, 2012
Page last updated: September 21, 2012
Content source: National Institute for Occupational Safety and Health, Mining Program
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