Effectiveness of Inclined Roof Bolts in Coal Mines.
NTIS: PB/80-167430 :115 pages
This report presents the results of an investigation of inclined roof bolts, anchored over pillars, in room-and-pillar coal mines susceptible to shear failures of the roof. Although the field data do not support this contention, it is believed on the basis of analyses and other work that inclined roof bolts do offer potential under some circumstances.
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