This from Steve Redick:

Russ Coughlin, long time fan and collector of all things radio traffic has shared a copy of the very interesting radio traffic from the Tennaco Chemical Company  5-11 & 5 Specials at 3615 S. Iron Street. Some interesting voices can be heard. On the FAO side Art Benker and Rich Meeker.  In the field 224 (DDC4) Bill Foran. This is a great listen!
Thanks to Russ for sharing this from his collection
 
Steve