Every since the start of December 2006, a few of the older units on UP's system have been placed in storage. Such is the case with UP 9858, sitting on a yard track in the Burnham Shops in Denver. Up until August 2001, this unit was SP 5514 (ex-DRGW 5514). It was patched after the UP merger and renumbered UP 5108. It kept that number for a mere 13 months, when it was renumbered to UP 9858 in September 2002 to make room for the SD70M's.
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