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原文传递 Haul Road Dust Control: Fugitive Dust Characteristics from Surface Mine Haul Roads and Methods of Control.

题名：	Haul Road Dust Control: Fugitive Dust Characteristics from Surface Mine Haul Roads and Methods of Control.
作者：	reed, w. r. organiscak, j. a.
关键词：	unpaved roads, dust emissions, respirable dust, thoracic dust, health hazard
摘要：	Surface mining operations use large off-road haul trucks extensively to move material at mining properties. Past research, using the United States Environmental Protection Agencys (EPA) emissions factors for unpaved haul roads, has shown that haul trucks generate the majority of dust emissions from surface mining sites, accounting for approximately 78%-97% of total dust emissions. Observations of dust emissions from haul trucks show that if the dust emissions are uncontrolled, they can be a safety hazard by impairing the operators visibility. This increases the probability for haul truck accidents. However, the greatest long-term health hazard of dust generated from hauling operations is due to inhalation of the respirable dust (median diameter <4 micrometers (mm)) and thoracic dust, which is equivalent to the EPAs definition of PM10 (particulate matter with a median diameter <10 mm). Exposure to respirable dust has long been considered a health hazard at surface mining operations, especially if silica dust is present. / Availability Note: Order this product from NTIS by: phone at 1-800-553-NTIS (U.S. customers); (703)605-6000 (other countries); fax at (703)605-6900; and email at orders@ntis.gov. NTIS is located at 5285 Port Royal Road, Springfield, VA, 22161, USA.
总页数：	u0818；4p
报告类型：	科技报告