John J. Sammarco

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Disclaimer: Mention of any company or product does not constitute endorsement by NIOSH. ABSTRACT This report (Independent Functional Safety Assessment 4.0) is the fifth in a nine-part series of recommendations addressing the functional safety of processor-controlled mining equipment. It is part of a risk-based system safety process encompassing hardware,(More)
— Miners depend most heavily on visual cues to recognize underground mining hazards; consequently, illumination plays a critical role in miners' safety. Some hazards are located in the miners' peripheral field-of-view (10 degrees to about 60 degrees off-axis) or on-axis (0 degrees). The objective of this research was to determine if there were visual(More)
Equipment control functions that were once hardwired are being implemented with software and very large scale integrated (VLSI) devices. Often this transition has resulted in increased flexibility, improved quality, and decreased costs. At the same time, it has created new concerns and challenges concerning worker safety. The visible and well-defined ladder(More)
This experiment investigated the effects of different machine mounted area lighting technologies on visual performance. The primary objective was to conduct a comparative evaluation of the lighting technologies based on the visual performance of thirty-six human subjects in a simulated underground mine environment. Incandescent (Incand), fluorescent(More)
—Illumination plays a critical role in an underground miner's safety because miners depend most heavily on visual cues to recognize hazards. Mobile mining machinery, located in the miner's peripheral field of view (10 • to about 60 • off-axis), may pose potential pinning and striking ± hazards. ± The main ob­ jective of this research was to determine if(More)
This document is in the public domain and may be freely copied or reprinted. DISCLAIMER The information presented in this document is for guidance and illustrative purposes only. Mention of any company or product does not constitute endorsement by the National Institute for Occupational Safety and Health (NIOSH). In addition, citations to Web sites external(More)
The mention of any company or product does not constitute endorsement by the NIOSH. The findings and conclusions in this paper are those of the authors and do not necessarily represent the views of NIOSH. Abstract—Researchers at the National Institute for Occupa­ tional Safety and Health (NIOSH) are investigating different light­ ing technologies with the(More)
—Light-emitting diodes (LEDs) are emerging as vi­ able replacements for incandescent (INC)-based cap lamps used in mining. The photometric and energy characteristics of these light sources differ in important ways. This paper describes the performance of LED and INC sources in cap lamps in terms of correlated color temperature, color rendering, light(More)
—Emergency shutdown systems (ESDs) for mining machinery provide critical functions to safeguard miners. Traditionally , ESDs were realized with simple hardwired circuits; today, there is a growing trend to use programmable electronic technology such as programmable logic controllers (PLCs). This paper describes an analytical study to quantify the safety(More)