R. G. LeTourneau's Overland Trains
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  • Building the Firestone 120x48x68 Tire Molds with a BETTS Vertical Boring Mill June 7, 2023
  • Amazon to Increase Book Prices June 20, 2023 to Compensate for Printing Costs May 17, 2023
  • Sno-Train on Display with Marston Mats May 5, 2023
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R. G. LeTourneau's Overland Trains

a complete history

R. G. LeTourneau's Overland Trains
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  • DEW Line
  • general-history
  • Greenland

North American Alert and Warning Networks

  • September 24, 2020
  • site-admin

Pine Tree Line – radar, planned 1946, handed over to Canada on 10Jan55

Mid-Canada Line or McGill Fence – 1956-1965
DEW Line – radio frequency tripwire 1957-1993, most deactivated 1988, the remaining upgraded
Green Pine Network – UHF, designed 1967, phased out in 1987
North Warning System (NWS) – radar, 1988-2025, Ratheon, AN/FPS-117 and short range AN/FPS-124 surveillance radars
Upgrade – As part of the United States Air Force new Arctic Strategy, their is a proposed upgrade occurring in 2025.

Others
The U.S. Navy also operates the Raytheon TPS-71 Relocatable Over-the-Horizon Radar(ROTHR)

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  • LCC-1-Sno-Train

Army Sno-Train image dated April 13, 1956

  • September 19, 2020
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  • TC-264 LeTourneau Sno-Buggy

What’s the Difference Between the Sno-Buggy and Swamp Buggy?

  • October 20, 2020
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About OverlandTrains.com

OverlandTrains.com is a companion to R. G. LeTourneau’s Overland Trains: a complete history. Now available on Amazon.com at https://www.amazon.com/dp/B0BFL91FX6

Recent Articles
  • Building the Firestone 120x48x68 Tire Molds with a BETTS Vertical Boring Mill June 7, 2023
  • Amazon to Increase Book Prices June 20, 2023 to Compensate for Printing Costs May 17, 2023
  • Sno-Train on Display with Marston Mats May 5, 2023
  • Augustin “Marty” Martinez and his Ties to LeTourneau’s Overland Trains March 23, 2023
  • Aerial Images of the Sno-Train in the Arctic Plus Salvage Yard March 21, 2023
Topics
  • Alaska Freight Lines (22)
  • Book updates (52)
  • Books-Reading (12)
  • DEW Line (16)
  • general-history (54)
  • Gold Digger (3)
  • Greenland (27)
  • LCC-1-Sno-Train (67)
  • Nuclear (12)
  • R.G. LeTourneau (20)
  • research (34)
  • Side Dump Train (4)
  • TC-264 LeTourneau Sno-Buggy (13)
  • TC-266 Marsh Buggy (8)
  • TC-497 Overland Train (63)
  • Thompson Trailer (3)
  • Tournatrain (8)
  • Uncategorized (2)
  • VC-12 Tournatrain (8)
  • VC-22 Sno-Freighter (32)
  • Yukon (5)
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