Today's Train of Thought- SD70MAC Attack Up North, January 15, 2011.

Even though Alaska is by far the biggest state in the Union, big trains are something of a rarity in the Big Dipper State, as the Alaska Railroad is isolated and disconnected from the rest of the rail network in the USA and Canada.

The link is provided instead by rail barges between Seattle, WA- where the cars are interchanged with BNSF or Union Pacific- or Prince Rupert, BC where the cars are interchanged with the Canadian National Railway.

The barges can typically accomodate anywhere from 40-55 cars each, but there are intra-line unit coal trains that can measure 75 cars in length. Although some of this coal is bound for on line customers like Fort Wainright, University of Alaska-Fairbanks or Eileson AFB, a good deal of the coal (mined at Healy, AK) travels to port at Seward where it is loaded onto ships for export to South Korea or Chile.

Railpictures.net photographer (and Alaska Railroad employee) David Blaze explains that on December 10, 2010, one of these 75 car trains was in the middle of unloading at Seward, but had to stop halfway through because of high winds. The train ended up leaving with 4 units and half of it's consist. The following day, another coal train showed up at Seward and was able to successfully offload its coal along with the other half of the train that had to stop on account of the wind.

For the return trip to Anchorage, the consist was successfully doubled up on December 12th, resulting in a 10 unit, 113 car, 7000 ft behemoth of a train- essentially 1½ trains. Here, David Blaze catches SD70MAC #4016 in charge of nine other EMD Behemoths as it snakes its way northward around the Turnagain Arm at Indian, AK on December 12, 2010.