Modify Selection
- Research methods and measures:
- Statistical analysis
Home Links
Results 21 - 30 of 31
-
5/1/1998 - Conference papersThe National Institute for Occupational Safety and Health (NIOSH) is dedicated to achieving "safety and health at work for all people - through research and prevention." An important procedure in pursuing this goal is the NIOSH surveillance studies wh...
-
1/1/1994 - NIOSH/USBM numbered publicationsThis paper examines safety concerns associated with deep-cut mining, using the U.S. Mine Safety and Health Administration accident database, interviews with mine workers and operators, and conversations with state, local, and union representatives.
-
1/1/1994 - NIOSH/USBM numbered publicationsThis paper provides statistical information on accidents, production, and employment at small U.S. underground coal mines.
-
11/1/1981 - Contract reportsA prototype detector using electromagnetic signals for finding trapped miners has previously been built and tested. The signals are generated from transmitters carried on the miner's belt and powered by his head lamp battery and the receiver is a human ...
-
7/1/1980 - Contract reportsThis report assesses the expected detectability, on the surface above mines, of electromagnetic signals produced in the 630- to 3,030-hz frequency band by a rescue transmitter activated by miners trapped underground. The implications of the results and ...
-
9/1/1974 - Contract reportsTwo 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...
-
9/1/1974 - Contract reportsMeasurements of the absolute value of electromagnetic noise and attenuation along a hoist rope were made in an operating Hard-Rock Mine, Lucky Friday Mine, located near Wallace, Idaho. The specific measured results are given in a number of spectral plot...
-
9/1/1974 - Contract reportsThe 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...
-
9/1/1974 - Contract reportsTwo different techniques were used to make measurements of the absolute value of electromagnetic noise in and above an operating coal mine, McElroy Mine, located near Moundsville, West Virginia. The electromagnetic environment created by 300-volt dc and...
-
9/1/1974 - Contract reportsTwo different techniques were used to make measurements of the absolute value of electromagnetic noise in an operating coal mine, Robena No. 4, located near Waynesburg, Pennsylvania. One technique measures noise over the entire electromagnetic spectrum ...
Home Links
Content source: National Institute for Occupational Safety and Health, Mining Program