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NAPA Investigates Silica Dust Control for Brooming, Other Machines

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Last month, NAPA Vice President for Environment, Health & Safety Dr. Howard Marks visited a D.C.-area road construction site to see how control technologies can reduce dust emissions associated with brooming and sweeping activities. OSHA's Silica Rule, which goes into effect in June 2017, specifies approved control technologies for milling machines to ease compliance; however, contractors must still be aware of potential airborne silica from other operations and ensure it remains below acceptable standards. Armed with a real-time dust monitor, Marks was able to conclude that potential airborne silica exposure can be effectively mitigated by using brooms with a continuous water spray system or an enclosed cab, at least for short-duration activities. NAPA's Silica Exposure Task Group continues to investigate practical methods for controlling roadway construction dust, to measure their efficacy, and to work to get them accepted by OSHA. For more information, contact Vice President of Environment, Health & Safety Dr. Howard Marks.
 
 

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