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Results 11 - 20 of 128
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9/1/2007 - Conference papersThis paper reviews how simultaneous application of three basic elements reduces the methane explosion hazard at coal mine working faces: (1) adequate ventilation, (2) regular monitoring of gas concentrations, and (3) elimination of ignition sources.
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11/1/2006 - Peer reviewed journal articlesNIOSH researchers studied laser safety in potentially flammable environments. Researchers measured threshold igniting powers as a function of beam diameter for butane and propane-air mixtures by laser-heating targets placed on optical fiber tips.
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9/1/2006 - Peer reviewed journal articlesResearchers conducted experiments to estimate the mean and standard deviation of laser powers needed to ignite 6% methane-air atmospheres using single-mode optical fiber tips covered by two types of iron oxide mixed with a ceramic adhesive.
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5/1/2000 - Peer reviewed journal articlesOptical technologies have progressed rapidly in the past 15 years. NIOSH is conducting a study to help provide a scientific basis for developing appropriate safety guidelines for optical equipment in underground coal mines.
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1/1/1994 - Information CircularsThis paper describes the history and technology of methane drainage in the US and other countries.
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12/14/2023 - Research projectsA project to develop effective measures to prevent hot surface ignitions on mining equipment, improve fire suppression techniques, and develop a diagnostic tool to determine the effect of mine fires on a mine’s ventilation system.
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2/14/2023 - Contracts and cooperative agreementsA contract with ADA Technologies to design and implement a purpose-built flame arrestor for use in explosion-proof enclosures for applications in gassy mines.
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6/23/2021 - Contracts and cooperative agreementsA contract with Xtraction Science and Technology, Inc., to examine instrinsically safe mine rescue UAV design.
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2/18/2021 - Research areasMethane is an odorless, tasteless, colorless, lighter-than-air gas formed by the decomposition of organic and other carbonaceous materials. From 5% to 15% can form an explosive mixture which, if ignited, can have catastrophic consequences.
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3/1/2019 - Peer reviewed journal articlesAn article examining the effects of spray type, operating pressure, and spray orientation on knockdown efficiencies on float coal dust for seven different water sprays.
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Content source: National Institute for Occupational Safety and Health, Mining Program