Results 1 - 2 of 2

• Performance Comparison of Rescue Breathing Apparatus
  10/1/1999 - Reports of Investigations
  A performance comparison of 14 rescue breathing apparatus was undertaken as an assessment of past and present worldwide technology. Rescue breathing apparatus are self-contained, closed-circuit breathing apparatus used for entry into areas having atmosp...
• Seismic Detection of Trapped Miners Using In-Mine Geophones
  1/1/1976 - Reports of Investigations
  A seismic system which utilizes in-mine geophones to detect trapped miners has been developed. Tests at the Bureau of Mines safety research mine at Bruceton, Pennsylvania, and at two operating mines indicate such a system has a maximum detection range i...