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While train PCNP is easing forward at a snails pace on the south main, train OANPZ is running at about 40mph on the north main getting ready to cross back to the south main. The dispatcher is running the hot OANPZ around the slower PCNP. Rock Springs is the east end of CTC out of Green River. From here to Riner (17 miles west of Rawlins) trains operate under double track rules. Train OANPZ had engines 3323, 3627, and 3232 with 47 loads at 3,332 tons. Disk 75