• DocumentCode
    1491549
  • Title

    Operation in mines

  • Author

    Marshall, C. G.

  • Author_Institution
    Tennessee Coal, Iron and Railroad Company, Birmingham, Ala.
  • Volume
    66
  • Issue
    10
  • fYear
    1947
  • Firstpage
    962
  • Lastpage
    963
  • Abstract
    PRODUCTION of 20,000 tons of coal daily is procured by the use of highly mechanized mining methods in the Tennessee Coal, Iron and Railroad Company. With the exception of main pumps used for mine drainage all underground equipment is operated from a 250-volt d-c grounded system. The total connected capacity of the conversion equipment at the company´s five mines is 8,600 kw.
  • Keywords
    Circuit breakers; Electron tubes; Generators; Glass; Maintenance engineering; Rectifiers; Relays;
  • fLanguage
    English
  • Journal_Title
    Electrical Engineering
  • Publisher
    ieee
  • ISSN
    0095-9197
  • Type

    jour

  • DOI
    10.1109/EE.1947.6443764
  • Filename
    6443764
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1491549