Extended Stack on Z

NW Mailing List nw-mailing-list at nwhs.org
Thu Dec 29 21:54:42 EST 2022

 That's a Y3
Jim Nichols
    On Thursday, December 29, 2022 at 03:46:52 PM CST, NW Mailing List via NW-Mailing-List <nw-mailing-list at nwhs.org> wrote:  
In a scene in “Operation Fast Freight” (on YouTube, and also available remastered for rent on Vimeo - https://vimeo.com/ondemand/filmsofthenandw), there is a short sequence of a Z switching what appears to be a chemical or petroleum plant. The locomotive has an extended stack. Was this common, and what was it’s purpose?  Better draft while switching? Better visibility? See the attached photo.
Matt GoodmanColumbus, Ohio, US
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