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• Griffin, R. E.
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  In-Mine Evaluation of Underground Fire and Smoke Detectors.
  Bureau of Mines, Twin Cities, MN
  IC 8808
  IC 8808
  1979
  27 p.

• Griffin, R. E.
  view article (1.0)

  In-Mine Evaluation of Underground Fire and Smoke Detectors. Information Circular 1979.
  Bureau of Mines, Twin Cities, MN
  IC 8808
  IC 8808
  1979
  31 p.