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Archive for November, 2009

Photos and Story by Martin Burwash

The Montana Rail Link is a regional line that tends to think big. Maybe it’s the big skies of the Big Sky State. When you are having issues with a tunnel what do you do? Remove part of the tunnel, of course! Essentially, the narrow smokey hole through the Great Divide west of Helena, known as the Mullan Tunnel needed an upgrade. With the arrival of the newer hi-tech locomotives, the SD 70 ACe to be exact, the narrow confines, high heat and thick carbon laden exhaust was more than the computers and circuitry of the new engines could handle. Unit after unit, the engines assigned to help trains over Mullan Pass were falling victim to the harsh interior of the tunnel. Full Story

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