The SD9 was rebuilt by Omnitrax for the North Western pacific, but it was never shipped to them and it has been used on the GW for years. GW's own SD9 is sitting idle. The GW has a GP20, several CF7s and GP7s. Recently they recevied some GP38s and GP15s. The railroad is really booming with a new ethanol plant built at Windsor. They run a UP unit corn train to Windsor a few times a weekwith GE Dash44Cs or EMD SD70s using a GW crew.
The Longmont branch is where the SD9 and one of the leased GP7s gets used the most.
Photo shows a GW freight with the SD9 and two leased GP15s.