Burlington Northern built the south end of the Orin Sub in the late 1970's, completing the connection with the north end in 1979. Chicago North Western was interested in helping finance the operation, but didn't have the money (Union Pacific would end up helping instead). Interesting now to see a (patched) CNW AC4400CW leading a westbound (geographic northbound) coal empty on Main 3 some 32 years later.
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