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12/29/2024
 
 
 
 
 
Owner: Union Pacific Railroad Company
Model:Rebuilt EMD Road SlugBuilt As:UP 316B (GP9B)
Serial Number:23722Order No:5552
Frame Number:5552-B17Built:9/1957
Notes:reblt 8/75 from 316B, retired 8/89
Other locos with this serial:  UP S4(Road Slug) UP 316B(GP9B)
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UP SD24 446
Title:  UP SD24 446
Description:  Union Pacific Railroad SD24 446 and Slug S4 at Pine Bluffs, Wyoming on an unknown day in August 1984, Kodachrome by Edward M. DeRouin, Chuck Zeiler collection. Number 446 was built in August 1960 (c/n 26035) as EMD SD24 demonstrator 7201, intended for the SP and painted in SP's gray and red nose paint scheme. It was sold to the UP in August 1961, eventually paired (around 1980) with Slug S4 and used in track sled maintenance service until retired in May 1985 (the last operating SD24 on the UP), when it was traded to EMD and scrapped by Pielet Brothers. Number S4 was built in September 1957 (c/n 23722) as GP9B 316B, rebuilt at Omaha in August 1975 as Slug S4, additional sand boxes (DD35 design) were added in October 1980. Slug S4 was retired in January 1990 and scrapped.
Photo Date:  8/1/1984  Upload Date: 5/17/2013 11:45:35 AM
Location:  Pine Bluffs, WY
Author:  Edward M. DeRouin
Categories:  Roster
Locomotives:  UP 446(SD24) UP S4(Road Slug)
Views:  2203   Comments: 0
UP Slug S4
Title:  UP Slug S4
Description:  Ex GP-9B 316B
Photo Date:  3/11/1990  Upload Date: 7/18/2007 3:17:30 PM
Location:  Chicago, IL
Author:  Alan Gaines
Categories: 
Locomotives:  UP S4(Road Slug)
Views:  3133   Comments: 1
UP S4 at Yard Center
Title:  UP S4 at Yard Center
Description: 
Photo Date:  3/17/1990  Upload Date: 4/17/2010 12:03:13 PM
Location:  Dolton, IL
Author:  Fred Schaerr
Categories: 
Locomotives:  UP S4(Road Slug)
Views:  1216   Comments: 0


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