NIOSH mine stoppings explosion test report

NIOSH/MSHA Tests Identify Strongest Ventilation Stoppings

NIOSH has posted several useful documents in the What's New section of its Web site in recent days, including an "Explosion Effects on Mine Ventilation Stoppings" report dated November 2008 that explains the results of NIOSH/MSHA tests on the strength of mine ventilation stoppings. The research evaluated explosive blast effects on stoppings made of dry-stacked solid and hollow-core concrete block, steel, wet-laid solid concrete block, and an innovative Australian woven cloth. The tests took place at the Pittsburgh Research Laboratory's Lake Lynn Experimental Mine.

The dry-stacked and coated solid-concrete-block performed well, surviving a total explosion pressure of about 6.7 psi (46 kPa) and being destroyed at a total explosion pressure of about 7.6 psi (52 kPa). A steel panel failed at a total explosion pressure of 1.3 psi (9 kPa). An 8-inch-thick wet-laid solid concrete-block stopping coated on one side withstood the strongest pressure, about 26 psi (180 kPa), and was not tested to failure. The woven cloth survived an explosion pressure of 4.0 psi (27 kPa) and was destroyed at about 6.1 psi (42 kPa). The results will help investigators determine the approximate explosion forces that destroy or damage stoppings in actual coal mine explosions.

Other documents made available by NIOSH include a guidelines document for state's public health activities in occupational safety and health, an analysis of the use of Major Hazard Risk Assessment to prevent multiple-fatality events in the U.S. minerals industry, and a report on ways to reduce low-back pain and disability among miners.

Product Showcase

  • EMSL Analytical, Inc. - Air Sampling Supplies & Testing Labs

    EMSL Analytical, Inc. operates laboratories throughout the United States and Canada. EMSL is a nationally recognized and locally focused provider specializing in fast laboratory results for Asbestos, Mold, Silica, Lead & Metals, Bacteria, Legionella, USP , Combustion By-Products, VOC’s, Radon, PCB’s, Formaldehyde, METH/Fentanyl, Identification of Dust & Unknowns. Sampling Pumps, Cassettes, Media & Supplies available. Reach us at 1-800.220.3675 3

  • Full Line of Defense Against Combustible Dust Nilfisk

    Nilfisk provides a comprehensive range of industrial vacuums meticulously crafted to adhere to NFPA 652 housekeeping standards, essential for gathering combustible dust in Class I, Group D, and Class II, Groups E, F & G environments or non-classified settings. Our pneumatic vacuums are meticulously engineered to fulfill safety criteria for deployment in hazardous surroundings. Leveraging advanced filtration technology, Nilfisk ensures the secure capture of combustible materials scattered throughout your facility, ranging from fuels, solvents, and metal dust to flour, sugar, and pharmaceutical powders. 3

  • Safety Shower Test Cart

    The Safety Shower Test Cart speeds up and simplifies emergency shower tests, ensures you stay in compliance with OSHA regulations, and significantly reduces testing costs. With 7 unique features, the cart makes testing easy, effective, and efficient. You can test water clarity, flow, temperature, and spread—all at the same time! Most safety shower testing kits create a mess, take too much time to use, and don't fully help you stay in compliance with OSHA & ANSI standards. Transform the way you test emergency showers with Green Gobbler Safety. 3

Featured