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Conclusion The standard method for determining DPM concentrations in underground mines is time consuming and provides limited data. Therefore, NIOSH developed an instru- ment, shown to be accurate in both the lab and the field, for measuring real-time DPM. The FLIR Airtec is a commercially available monitor that can be a valuable tool not only for assessing DPM exposures but also for allowing controls to be more effective in reducing these exposures. Some examples described in this article were evaluating enclosed cabs, adjusting ventilation, implementing more effective administrative controls, and assessing exposures in conjunction with a helmet- worn video recording system. While this list is not all-inclusive, it demonstrates some of the potential benefits of the Airtec for mine operators. Disclaimer Mention of a company name or product does not constitute an endorsement by the NIOSH. The findings and conclusions in this report are those of the authors and do not necessarily represent the views of the NIOSH. References • Cecala AB, Reed WR, Joy GJ, Westmore- land SC, O'Brien AD (2013). Helmet- Cam: Tool for assessing miners' respirable dust exposure , Mining Engineering, Vol. 65, No. 9, pp. 78?84. • IARC (International Agency for Research on Cancer). IARC: Diesel Engine Exhaust Carcinogenic. (Press Release No. 213) June 12, 2012. Accessed at http://press.iarc.fr/pr213_E.pdf on January 15, 2013. • Lethbridge T., Good M. (2010). A multi- focus approach to DPM reduction at the Greens Creek mine. In: Hardcastle S., McKinnon DL. Proceedings of the 13 th U.S./North American Mine Ventilation Symposium, Sudbury, Ontario, Canada: 65 71. • MSHA (2006). 30 CFR Part 57 Diesel Par- ticulate Matter Exposure of Underground Metal and Nonmetal Miners; Final Rule. Mine Safety and Health Administration, Fed. Reg. vol. 71, No. 96, 28924. • Noll JD, Janisko S., Mischler S. (2013). Real-Time Diesel Particulate Monitor for Underground Mines , Anal. Methods 5 (12), 2954–2963. • Noll JD, Janisko S (2013). Evaluation of a Wearable Monitor for Measuring Real-Time Diesel Particulate Matter Concentrations in Several Under- ground Mines , Journal of Occupa- tional and Environmental Hygiene, 10:12, 716-722. • Noll JD, Cecala A, Organiscak J, Rider J. (2014) Effects of MERV 16 filters and Routine Work Practices on Enclosed Cabs for Reducing Respirable Dust and DPM Exposures in an Underground Limestone Mine , Mining Engineering, 2014, Vol. 66, No. 2, pp 45-52. James Noll, Andy Cecala, John Organiscak and Sam Janisko are researchers working with the National Institute for Occupational Safety and Health, Office of Mine Safety and Health Research, located in Pittsburgh, Pennsylvania, USA. Noll can be reached at +1-412-386-6828 (E-mail: JIN1@cdc.gov). JUNE 2014 • E&MJ; 81 www.e-mj.com D P M M O N I T O R I N G EMJ_pg78-81_EMJ_pg78-81 6/3/14 3:23 PM Page 81