The objective of this research was to develop and test a fail-safe device that would provide positive indication of track switch point position and be suitable for application in contemporary underground coal rail haulage systems. The effort was divided into four phases as follows: (1) evaluation, (2) design, (3) fabrication and surface testing, and (4) underground installation and testing. The results are described in Section 2 of the report. A sequential listing of the 53 steps employed in developing the system is Appendix A.

  • Corporate Authors:

    MB Associates

    P.O. Box 196, Bollinger Canyon Road
    San Ramon, CA  United States  94583

    Bureau of Mines

    C Street Between 18th and 19th Streets, NW
    Washington, DC  United States  20241
  • Authors:
    • St Amant, A
  • Publication Date: 1978-2-28

Media Info

  • Pagination: 34 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00317971
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: BUMINES-OFR-35-80 Final Rpt.
  • Contract Numbers: H0166046
  • Files: TRIS
  • Created Date: Jul 22 1980 12:00AM