Canopy-air Curtain Dust Reductions on a Gathering-arm Loader.
Volkwein JC; Page SJ; Thimons ED
MISSING :9 pages
The canopy-air curtain was originally developed by the Bureau of Mines to surround the operator of a continuous mining machine with a zone of clean air. This report describes the application and testing of a canopy-air curtain on a gathering-arm loader, as well as some of the problems associated with providing a zone of clean air to a standing, semimobile operator. The area of air-curtain coverage and effects of air velocity are discussed. In its present form, the canopy-air curtain provides a 50-precent reduction in respirable dust to the operator.
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