I'm trying to build this Santa Fe work train. I have suitable locomotives (three U25's standing in for a pair of C30-7's), the crane, and "donor" heavyweight cars. I haven't been able find any good CNW work train photos, but I did mock the one up in the video below.
This was done several years ago. The plan is after I build the 2-rail ATSF work train I'll build this up in 2-rail as well. I'll add some more equipment and probably use GP38's to pull it around. I've since replaced the C44-9W's with scale-wheeled units for the other train in the video.