A molybdenum mining project in Colorado has involved building of a 14.4-mile double-track automated narrow gauge ore-hauling railroad which includes a 9.6-mile tunnel under the continental divide, third-longest railroad tunnel in the world. Six electrically operated unit trains will shuttle between mine and ore processing plant. Laser beam guidance controlled tunnel construction. The welded rails are laid on wood cross ties on the surface and on a concrete slab in the tunnel. Three piece rubber fasteners are used for securing the rails to the slab.

  • Availability:
  • Corporate Authors:

    Simmons-Boardman Publishing Corporation

    508 Birch Street
    Bristol, CT  United States  06010
  • Publication Date: 1975-9

Media Info

  • Features: Photos;
  • Pagination: p. 18-20
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00126443
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Nov 5 1976 12:00AM