[CBQ] Photo: Unloading Alum From CB&Q Boxcar 134010 (1931)

["Bob Chaparro via groups.io" <chiefbobbb=verizon.net@groups.io>]

Photo: Unloading Alum >From CB&Q Boxcar 134010 (1931)

A photo from the Detroit Public Library:

https://digitalcollections.detroitpubliclibrary.org/islandora/object/islandora%3A230469

Click and hold to enlarge photo.

Caption:

View of two men unloading alum, via a hose, from a railroad freight car during the construction of the Chemical Building in the Springwells Station treatment plant, Detroit water supply system. Printed on front: "City of Detroit. Department of Water Supply. Springwells Station. Chemical Building. Contract No. FC-20. Building construction: W.E. Wood Company. File no. 831. No. 30. Date: 8-6-31. Photo by Manning Brothers." Typed on back: "Unloading first car of alum; air hose suspended from cable."

Alums are a family of chemical compounds. In this case the load probably is a

potassium-based alum used in water treatment.

Bob Chaparro

Hemet, CA

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