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Characteristics of Fugitive Dust Generated from Unpaved Mine Haulage Roads

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    [Fugitive Just is generated alone unpaved mire reads from intermittent equipment traffic. Typically, the majority of such traffic consists of trucks hauling either mine product or waste [rum the surface mime pit and/or the processing plant. Fugitive dust generated along these unpaved mine roads includes particles of all sizes which become airborne. The potential hazards include the deleterious effects to human health of inhaled dust, traffic visibility hazards and environmental impacts on the localized area by the larger-sized visible airborne dust. Two held surveys were recently conducted to quantify fugitive dust generation and dispersion from truck traffic on unpaved and untreated mine haulage roads For these surveys., airborne glow sampling was conducted at multiple sampling fixations away from an unpaved haulage road at a limestone quarry/plant and at a coal mine preparation plant lo measure the size characteristics, concentrations. and dispersive behavior of the dust cloud generated from truck traffic- Results show that at least 80% of the airborne Just generated by haul trucks was larger than 10 ?m- Airborne respirable, thoracic, and total dust concentrations all decreased and approached background concentrations 30.5 in (100 feet) from the road This report describes the average and instantaneous peak dust levels that were measured tip to 30.5m (100 feet) Iron the haulage road. Keywords: Unpaved mine road, fugitive dust, silica.]
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