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  • Marshall, M. D.
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    Assessment of Dispersing Tracer Gas with Ventilation Air Stream to Detect Mine Fires. Open-File Report. September 26, 1979-August 31, 1983.
    MSA Research Corp., Evans City, PA
    OFR 11784
    Bureau of Mines, Washington, DC, OFR 11784
    October 1983
    70 p.

  • Timko, R. J.; Marshall, M. D.; Thimons, E. D.
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    Laboratory Evaluation of Spray-Applied Rigid Urethane Foams.
    Bureau of Mines, Pittsburgh, PA
    RI 8974
    RI 8974
    1985
    22 p.

  • Thimons, E. D.; Marshall, M. D.
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    In-Mine Remote-Actuated Stench Fire-Warning System.
    Bureau of Mines, Pittsburgh, PA
    RI 8872
    RI 8872
    1984
    13 p.