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Field test of an automated temporary roof support (ATRS) on a low- coal, single fixed-head roof bolting machine (squirmer).
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, TPR-119, :1-11
An economical, remotely operated (automated), temporary roof support (ATRS) has been developed by the Bureau of Mines for use on a single, fixed-head roof-bolting machine (squirmer) that operates in low coal seams (less than 42 inches thick). The ATRS eliminates the need for squirmer operators and helpers to go under unsupported roof to set or remove temporary support prior to or during the roof- bolting cycle--a task that annually accounts for approximately 20 pct of all roof fall fatalities. The ATRS can be adapted to any squirmer used in the U.S. low coal fields. A prototype ATRS was field tested at Imperial Colliery Company's Mine No. 20 in Eskdale, West Virginia. The mine No. 20 amended roof-control plan, which requires the use of the Bureau's ATRS as temporary support during face bolting, has been approved by the Mine Safety and Health Administration (MSHA), U.S. Department of Labor.
Mineral-processing; Mining-industry; Coal-mining; Longwall-mining; Underground-mining; Room-and-pillar-mining; Structural-analysis; Traumatic-injuries; Injury-prevention; Control-technology; Control-methods
NTIS Accession No.
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, TPR-119
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division