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I knew that the Southwest Chief was due at any moment so I was extra careful as I walked around the mainline tracks. The safety motto is: Expect a train in either direction on any track at any time.
Amtrak train 4 flies by on the north main while the crew of the coal train continues hooking up the control lines and cable to engine 5109. After swapping engines, the train will head west on the mainline to Coronado Jct. and then go south to the Salt River Project Coronado power plant. Disk 66