The Medicine Bow Mountains follow the route of the railroad company that operates how many locomotives?
Medicine Bow Mountains:  In Wyoming, the range sits west of Laramie, in Albany and Carbon counties to the route of the Union Pacific Railroad and U.S. Interstate 80. Union Pacific Railroad: The Union Pacific Railroad (or Union Pacific Railroad Company and simply Union Pacific) is a freight hauling railroad that operates 8,500 locomotives over 32,100 route-miles in 23 states west of Chicago and New Orleans.
8,500