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Improved Canopy Air Curtain Systems.

Engel MR; Johnson DF; Raether TD
Available for Reference At Bureau Libraries :291 pages
The objectives of this report were to develop an improved canopy air curtain system for mining use. The canopy air curtain concept offers an inexpensive solution to dust protection of an individual worker while not interfering with the production process. The purpose of this contract was to apply canopy air curtain concepts to a wider variety of mining equipment and operations. In phase i canopy air curtains currently used in the mining industry were studied and concepts for mine mill air curtains were designed. During Phase II, canopy air curtains for retrofit on underground mining machines and enclosed cabs on surface mines were designed. The possibility of a gas purification module for protection from diesel contaminates was investigated. During Phase III, the canopy air curtain for retrofit on underground mining equipment and the air- conditioned, partially enclosed cab were fabricated and laboratory tested. Results showed an 89 percent reduction in respirable dust under the canopy air curtain. Three mine mill systems showed dust reductions of 82.8 to 98.4 percent. During Phase IV, the air- conditioned, partially enclosed cab system was field tested. The retrofit canopy air curtain and the heat only partially enclosed cab systems were constructed and shipped to their respective field test sites for USBM evaluation. A cost and use study on cab air filtration systems used in the mining industry was also conducted.
Publication Date
Document Type
CP; Final Contract Report;
Fiscal Year
NTIS Accession No.
NTIS Price
Identifying No.
OFR 25-88
NIOSH Division
Source Name
Available for Reference At Bureau Libraries
Performing Organization
Donaldson Company, Inc.
Page last reviewed: November 19, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division