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UP 909056 is a 40 foot flat car used in transporting equipment between job sites. On this day, it is moving equipment through Salt Lake City. North Yard. Salt Lake City, Utah. April, 1983. Photo by Warren Johnson.

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The Piggy Packer is a special built piece of machinery that can be used on containers and trailers of various sizes. The operator is usually a clerk that is trained to operate the machine. The ramp. Salt Lake City, Utah. April, 1986. Photo by Warren Johnson.

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Sperry Rail Service 144 next to the Provo, Utah depot. The car is full of electronic equipment to detect defects in the rail. Provo, Utah. April, 1983. Photo by Warren Johnson.

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An anti climber is a lip at the top of the front pilot plate. Its purpose is to stop debris from a collision from going up into the cab and injuring the crew. UP 2478 did not have an anti climber. UP Diesel Shop. Salt Lake City, Utah. April, 1985. Photo by Warren Johnson.

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One of the very first train chasing photos that Warren shot: "I had an old Kodak rangefinder camera that was very slow. I would wait for a train, and go up the canyon, and only see 1 train." Mountain Green, Utah. September, 1966. Photo by Warren Johnson.

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UP, with a U made into a W, 25635, is a caboose assigned to the caboose pool. UP 25335 caboose is assigned to local service. They are on the caboose set-out track by the 13th North tower. North Yard. Salt Lake City, Utah. January, 1984. Photo by Warren Johnson.

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UP 3355 is a 3,000 horsepower SD40-2 locomotive weighing in at 392,000 pounds. It was built in May, 1977 and has a 144 inch nose, under which is some radio equipment. Notice how clean it is in that area. UP Diesel Shop. Salt Lake City, Utah. August, 1988. Photo by Warren Johnson.

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UP 6929, 6914, and an SD40-2 are being assembled into an outbound consist. All the hoses and cables will be connected, and then an outbound load test will be performed. UP service pit. Salt Lake City, Utah. March, 1985. Photo by Warren Johnson.

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15,000 horsepower is sitting on the approach to the old service pit. They are waiting to get serviced. UP diesel shop. Salt Lake City, Utah. June, 1976. Photo by Warren Johnson.

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UP 729 and two other GP30s are leaving Riverdale Yard in Ogden. This is today's Park City Local. They will switch Holcim Cement on their way to Keetley. Mount Ogden is in the background. Riverdale Yard. Ogden, Utah. April, 1981. Photo by Warren Johnson.

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UP 18, a 3600 horsepower RCS Master unit SD45, is at Durbano Metals in Ogden. It is being scrapped on site after many years of faithful service. Ogden, Utah. May, 1986. Photo by Warren Johnson.

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UP 6909 and 6901, both 6600 horsepower DDA40Xs, are on the service pit getting ready for another run. After servicing, they will be outbound load tested and then wait for their next assignment. UP Service Pit. Salt Lake City, Utah. October, 1983. Photo by Warren Johnson.

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When they completed the shop in 1955, they had a public Open House. This scene was set up for the Open House. It is a standard turbine hanging from the 250 Ton crane over another turbine. Union Pacific Photo. Salt Lake City, Utah. 1955. Warren Johnson Collection.

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Three SD45 locomotives are on the ready track in Provo, Utah. UP 49 is the lead unit of the 10,800 horsepower consist. They are on the ready track, and awaiting their call time. Prove, Utah. August, 1982. Photo by Warren Johnson.

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UP 729 and two other GP30s, are crossing the wooden trestle over the Weber River with some hopper cars. They are switching Holcim Cement at Devils Slide. This is the Park City Local. Devils Slide, Utah. March, 1986. Photo by Warren Johnson.

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