Topics

Photo: CB&Q Boxcar 134010

Bob Chaparro
 

Photo: CB&Q Boxcar 134010

An image taken in 1931 from the Detroit Public Library:

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

Click on the image and hold to temporarily enlarge it.

Description: 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."

Dictionary Definition of Alum: The most widely used alum is potassium alum. It was used since antiquity as a flocculant (promotes clumping of particles) to clarify turbid liquids, as a mordant (a substance that combines with a dye or stain and thereby fixes it in a material) in dyeing, and in tanning. Other alums include sodium alum and ammonium alum.

Bob Chaparro

Hemet, CA

Claus Schlund \(HGM\)
 


Hi Bob and List Members,
 
You may be able to see the entire image at full resolution (without having to click on the image, without holding temporarily, without having to walk and/or chew gum at the same time) by clicking on the link below...
 
 
Thanks Bob for sending this out, it is a very nice image.
 
Claus Schlund
 
 

----- Original Message -----
Sent: Sunday, September 22, 2019 1:08 PM
Subject: [RealSTMFC] Photo: CB&Q Boxcar 134010

Photo: CB&Q Boxcar 134010

An image taken in 1931 from the Detroit Public Library:

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

Click on the image and hold to temporarily enlarge it.

Description: 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."

Dictionary Definition of Alum: The most widely used alum is potassium alum. It was used since antiquity as a flocculant (promotes clumping of particles) to clarify turbid liquids, as a mordant (a substance that combines with a dye or stain and thereby fixes it in a material) in dyeing, and in tanning. Other alums include sodium alum and ammonium alum.

Bob Chaparro

Hemet, CA

RICH CHAPIN
 

Alum treated the surface water to removed solids, makes the water clear.

Rich Chapin