Coal Age

SEP 2018

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38 September 2018 operating ideas continued The discomfort and disability glare re- sults for Phase 1 indicated no statistically significant difference between the Saturn and the traditional lighting. The De Boer rating for both lights was eight, indicating that discomfort glare was not an issue for the Phase 1 location. This is noteworthy be- cause it exemplifies the merits of the Saturn light design to provide better illumination to see trip hazards without increasing glare. The discomfort and disability glare re- sults for Phase 2 indicated statistically dif- ferent results between the Saturn and tradi- tional lighting. Discomfort glare improved three levels (level five with the traditional light to level eight with the Saturn light) on the De Boer nine-level glare rating scale. Saturn Light Availability The Saturn light is available for commer- cialization, and the design documentation is available at content/saturnarealight.html. The down- loadable ZIP file includes a PDF describing a functional overview of the Saturn light, a RE- ADME file, and numerous individual soft- ware and schematic files created by NIOSH and NIOSH partners in this research. The CDC's Technology Transfer Office has ap- proved the public release of these files. John Sammarco, Ph.D., is a principal re- search engineer for the Human Factors Branch of NIOSH's Pittsburgh Mining Re- search Division. He can be reached at jsam- For further information on NIOSH's lighting research, go to www.cdc. gov/niosh/mining/topics/Illumination.html. Acknowledgment The NIOSH research team thanked J.H. Fletcher & Co. for access to the roof bolter used for this study. Disclaimer The findings and conclusions in this paper are those of the authors and do not necessarily represent the official position of the National Institute for Occupation- al Safety and Health, Centers for Disease Control and Prevention. Mention of any company or product does not constitute endorsement by NIOSH. References • Mine Safety and Health Administra- tion (MSHA) [2015]. MSHA Fact Sheet: Mine Non-Fatal Lost-Time Injury Rate Both Coal and Metal/Non Metal Mines CY 2009–CY 2015. sites/default/files/Mine%20Non-Fa- tal%20Lost-Time%20Injury%20Rate. pdf. Accessed July 20, 2018. • National Mining Association (NMA) [2016]. Profile of the U.S. Coal Miner, 2016. uploads/2016/09/coal_miner_pro- file_2016.pdf. Accessed July 11, 2018. • Perceptix [2018). Mars Contrast Sen- sitivity Tests. https://marsperceptrix. com/mars-contrast-sensitivity-tests. Accessed July 17, 2018. • Rea MS (ed.) [2000]. IESNA lighting handbook: reference and application, Ninth ed. New York, NY: Illuminating Engineering Society of North America. • Sammarco JJ, Podlesny A, Rubinstein E, Demich B [2016]. An analysis of roof bolter fatalities and injuries in U.S. mining. Transactions of the Soci- ety for Mining, Metallurgy, & Explora- tion. 340(1): 11–20. • Sammarco JJ, Macdonald B, Dem- ich B, Rubinstein E, Martell M [2018]. LED lighting for improving trip object detection for a walk-thru roof bolter. Lighting Research and Technology. The Society of Light and Lighting. 0; 1-17.

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