Results 71 - 74 of 74

• EM Location System Prototype and Communication Station Modification
  7/1/1973 - Contract reports
  A prototype electromagnetic (em) location system consisting of six miniature transmitters, six miniature receivers, and one multichannel receiver was developed by Westinghouse Georesearch Laboratory and is described in this report.
• Analysis of Communication Systems in Coal Mines
  5/1/1973 - Contract reports
  The results of a two-year research effort aimed at improving communication systems in coal mines is reported, as well as a review of communication methods presently used in coal mines. Theoretical and-experimental results of a four pronged effort in the...
• Preliminary Performance Predictions For Electromagnetic Through-The-Earth Mine Communications: A Collection of Working Memoranda
  3/1/1972 - Contract reports, Open File Reports
  This report comprises three working memoranda that present preliminary performance estimates for baseband voice and narrowband through-the-earth electromagnetic communications systems of principal interest to the Bureau of Mines for operational/emergenc...
• Specialized Fortran Computer Programming and Analysis Services to Upgrade Capability of MFIRE Program
  12/1/1994 - Contract reports
  This report is a summary of the work accomplished during the performance of the project titled "Specialized Fortran Computer Programming and Analysis Services to Upgrade Capability of MFIRE Program". This project investigated and corrected algorithm con...