• Geology
  • Published 1950

Recent rock-dusting experiments for arresting coal-mine explosions

  title={Recent rock-dusting experiments for arresting coal-mine explosions},
  author={Irving Hartmann and John Nagy and Herbert Howarth and Adolph Sachs},
An investigation was made in Experimental coal mine at Bruceton, Pa., to determine efficacy and safety of dispersing rock dust by explosives and to ascertain whether explosive gas-air mixtures or coal dust might be ignited during such rock dusting. Some recent experiments on bag-type devices are described in which each unit was provided with a burster for scattering rock dust in path of explosion. 


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