Welcome to CDC Stacks | Assessment Of Present Electromagnetic Techniques For The Location Of Trapped Miners - 8555 | National Institute for Occupational Safety and Health
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
Assessment Of Present Electromagnetic Techniques For The Location Of Trapped Miners
  • Published Date:
    0/1/1900
Filetype[PDF - 772.15 KB]


Details:
  • Personal Authors:
  • Description:
    Field studies have been conducted in a large number of coal mines throughout the U.S. to determine the effectiveness of electromagnetic techniques in locating men trapped underground following a mine disaster. Data from these tests have been used to generate models of expected signal and noise distributions as found above mines throughout the coal fields. These distributions have aided in placing the expected performance of a through-the-earth electromagnetic communications technique into a probabilistic framework. Results indicate an expected 45% probability of detecting a miner's signal from a depth of 1,000 ft, a depth which exceeds 903 of the coal mines within the U.S. and a 90% probability at a depth of 500 ft, a depth which exceeds 50% of the mines.

  • Supporting Files:
    No Additional Files
No Related Documents.
You May Also Like: