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• Electromagnetic Noise in Itmann Mine
  9/1/1974 - Contract reports
  Two different techniques were used to make measurements of the absolute value of electromagnetic noise in an operating coal mine, Itmann No. 3 Mine, located near Mullens, West Virginia. The electromagnetic environment created by 250-volt dc and 550- and...
• Time and Amplitude Statistics for Electromagnetic Noise in Mines
  9/1/1974 - Contract reports
  The time and amplitude statistics necessary to adequately describe electromagnetic (EM) noise in mines are illustrated through computer soft- ware techniques. They are 1) Allan Variance Analyses (AVA), 2) Interpulse Spacing Distributions (ISD), 3) Pulse...