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Charles S. White and Andrew Lombardi filtering precipitates at Dearborn laboratory facility

  • 1934-Mar-16

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Elevated view of employees Charles S. White (left) and Andrew Lombardi (right) at work in the Dearborn Chemical Company's 35th Street laboratory facility and manufacturing plant. Per notations accompanying the photograph, White and Lombardi are seen filtering off calcium precipitates, part of the regular scheme of water analysis conducted at the facility. Founded in 1887, the Dearborn Chemical Company was a corporate ancestor of BetzDearborn, Incorporated best known for manufacturing water treatment chemicals for use in boilers and cooling towers.

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  • 7.75 in. H x 9.75 in. W
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  • Deaborn Chemical Company
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  • Courtesy of Science History Institute

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  • Box 17, Folder 14

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Dearborn Chemical Company. “Charles S. White and Andrew Lombardi Filtering Precipitates at Dearborn Laboratory Facility,” March 16, 1934. BetzDearborn, Incorporated Records, Box 17, Folder 14. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/n870zr629.

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