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Deep cover pillar recovery in the US.

Authors
Mark-C
Source
Proceedings of the 28th International Conference on Ground Control in Mining, July 28-30, 2009, Morgantown, West Virginia. Peng SS, Barczak T, Mark C, Tadolini S, Finfinger G, Heasley K, Luo Y, eds., Morgantown, WV: West Virginia University, 2009 Jul; :1-9
NIOSHTIC No.
20035812
Abstract
In the wake of the Crandall Canyon mine disaster, the U.S. Congress asked the National Institute for Occupational Health and Safety (NIOSH) to study the safety of deep cover pillar recovery operations in the US. The legislation defined "deep cover" to be greater than 1,500 ft, but NIOSH is also evaluating mines at depths greater than 1,000 ft when multiple seam interactions are encountered. By these definitions, there about 35 active mines that engage in deep cover pillar recovery, in the states of Utah, Colorado, Virginia, West Virginia, and Kentucky. To date, NIOSH has documented ground conditions and ground control experience at nearly all of them. This paper provides an overview of current deep cover pillar recovery practice. Specific ground control issues that are discussed include: Pillar recovery sequences, Pillar and barrier pillar design, Coal bumps, Thick seam pillar extraction, and Multiple seam interactions.
Keywords
Coal-miners; Coal-mining; Coal-workers; Ground-control; Ground-stability; Mine-rescue; Mine-shafts; Mining-industry; Occupational-hazards; Risk-analysis; Room-and-pillar-mining; Safety-measures; Safety-practices; Underground-mining; Work-areas; Work-environment; Workplace-studies
Publication Date
20090728
Document Type
Conference/Symposia Proceedings
Editors
Peng-SS; Barczak-T; Mark-C; Tadolini-S; Finfinger-G; Heasley-K; Luo-Y
Fiscal Year
2009
NTIS Accession No.
NTIS Price
ISBN No.
9780978938338
NIOSH Division
PRL
Priority Area
Mining
Source Name
Proceedings of the 28th International Conference on Ground Control in Mining, July 28-30, 2009, Morgantown, West Virginia
State
PA; WV
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