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Train 144 smokes up the tunnel as it climbs the grade above Thistle on June 2, 1989.
Earlier that same morning, engine 3084 was added at Salt Lake City to help Amtrak 6 (California Zephyr) over the mountain grades on its run to Denver. The train has engines 3084, 320, 351, and 222. Bringing up the rear of the train are two private cars. Disk 30