Information Circular 8742: Underground Mine Communications (in Four Parts). 1. Mine Telephone Systems

Details

• Corporate Authors:
  United States. Bureau of Mines
• Description:
  This Bureau of Mines report is devoted to descriptions of systems that provide in-mine wired telephone service. Although they may incorporate other features, each system described functions to allow one telephone to selectively access another telephone. Except for the paper on conventional telephone equipment, the equipment described is newly developed and specifically designed to satisfy the requirements of underground mine communications. Chapters include: 1) Conventional Telephone Equipment; 2) A dial-and-page telephone system; 3) An industrial communications system; 4) A coaxial-cable telephone system; and, 5) Appendix.
• Subjects:
  Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Information Circular
• Document Type:
  Text
• Genre:
  Conference Publications ; Pamphlet or Booklet
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  PRC - Pittsburgh Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-61
• NIOSHTIC Number:
  nn:10001362 ; nn:10001228 ; nn:10001238
• NTIS Accession Number:
  PB-270187
• Citation:
  NTIS: PB 270 187 :61 pages
• Federal Fiscal Year:
  1977
• Peer Reviewed:
  False
• Source Full Name:
  NTIS: PB 270 187
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:acd887c121ed3750ee160914f3f13f6c027c71ec32151d0ba98419417caa5a1c00c9b929b56d55dd69bad50eec8008cf3a3614b6bec3d1072ce5a7f7fbf7bcfc
• Download URL:
  https://stacks.cdc.gov/view/cdc/236164/cdc_236164_DS1.pdf
• File Type:
  [PDF - 10.37 MB ]