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NIOSH/industry collaborative efforts show improved mining equipment cab dust protection.

Authors
Organiscak-JA; Cecala-AB; Thimons-ED; Heitbrink-WA; Schmitz-M; Ahrenholtz-E
Source
Trans Soc Min Metal Explor 2003 Dec; 314:145-152
NIOSHTIC No.
20026001
Abstract
Mobile excavation equipment operators at surface mines generally have the highest exposure to airborne respirable silica dust. Operator cabs on newer equipment are usually enclosed and equipped with heating and air conditioning systems. Many newer cabs are also equipped with air filtration systems. However, some newer cabs and many older cabs have either inefficient or no air filtration systems. The U.S. surface mining industry is still populated with older equipment, and many of these have cabs that provide little or no respirable silica dust protection. Collaborative field studies were conducted as part of a partnership involving NIOSH, Clean Air Filter, Red Dot Corp., the Mine Safety and Health Administration, and several mine operators to demonstrate that effective dust protection can be provided by these cabs at a nominal cost to mine operators. This effort encompassed adding an external make-up air fan and filter system to a retrofitted roof-mounted heating and air conditioning system in three older equipment cabs and attempting to seal the cab enclosures to achieve interior cab pressurization. A better than 90% dust reduction was measured inside two of the three enclosed equipment cabs. It was possible to achieve positive cab pressurization inside these two cabs. A less significant dust reduction was measured inside the third cab, where positive pressurization was not achieved. These field studies demonstrate the key elements needed to improve enclosed cab dust protection in a cost-effective manner.
Keywords
Excavation-equipment; Surface-mining; Mining-equipment; Respirable-dust; Silica-dusts; Filtration; Dust-particles; Enclosed-cabs; Occupational-health
Contact
NIOSH Pittsburgh Research Laboratory, P.O. Box 18070, Pittsburgh, PA 15236
CODEN
TMENAE
Publication Date
20031201
Document Type
Journal Article
Editors
Yernberg-WR
Funding Type
Grant
Fiscal Year
2004
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-T42-OH-008491
ISSN
1075-8623
NIOSH Division
PRL
Source Name
Transactions of the Society for Mining, Metallurgy, and Exploration
State
PA; IA; WA
Performing Organization
University of Iowa
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