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13210RE: [FJGRailroad] Super steel

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  • joseph Klapkowski
    Mar 1, 2008
      All concerned,
      Anyone wishing to see a photo of one of these engines, my kids got the photos back from Rite Aid. I will scan and email to you if you like

      To: FJGRailroad@yahoogroups.com
      From: handyman756@...
      Date: Tue, 19 Feb 2008 16:20:31 -0800
      Subject: Re: [FJGRailroad] Super steel

      Based on a little on-line digging:
      Mauritania (Islamic Republic of Mauritania)is a former
      French colony located on the northwest cost of Africa.
      In 1974 the government of Mauritania nationalized
      MIFERMA (Mauritanian Company of Iron Mines - acronym
      is from the French words) and created SNIM - Societe
      nationale industrielle et miniere. The company
      operates three large open pit iron ore mines in the
      heart of the Sahara desert and its own single track
      standard gauge railway to haul the ore 450 miles out
      to the Atlantic port of Nouadhibou. Six trains are
      normally run simultaneously - 3 full and 3 empty.
      Average load weight is 23,000 tons. The main problems
      noted for the railway are the tracks being completely
      buried by the sand, the constant coating of sand on
      the rails which cuts adhesion to 28-30%, rail wear,
      and maintaining track geometry.

      The usual motive power is three or four General Motors
      SDL40-2s developed by Electro-Motive for special
      desert operations. As far as that special air system
      is concerned: "The trains generate their own
      minisandstorm that enshrouds and follows the
      locomotives the entire route, the sand being ingested
      and then expelled by a sophisticated filtration
      system. The central air compartment, which supplies
      air to the engine and electrical equipment for
      cooling, is protected by self-purging filters that are
      pulsed by high pressure air to back-flush the
      elements. After passing this stage, the air is
      filtered again by specially treated fiberglass
      elements before entering the engine's turbocharger. "

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