Private Collection of Mike Cochran - 8 Matching Results

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[Letter from R. J. Thompson to Alex Bradford, June 25, 1935]

Description: Letter from an engineer at Kinetic Chemicals, Inc. to Alex Bradford regarding an inquiry about the compounds used for fire extinguishing purposes with a discussion of chemical compositions and boiling points, with an offer to discuss further in person. A handwritten "x" is added in red pencil next to a note about chemicals manufactured by Dow.
Date: June 25, 1935
Creator: Thompson, R. J.

A New Device for Locating Hidden Pipes

Description: Reprinted article describing a device that detects buried or hidden pipes based on magnetic deflection, by reducing the control effects of the earth's magnetic field. It includes photographs of the device and its use, as well as data graphs. Some text is underlined in red and blue, and there is a pencil sketch at the very end.
Date: 1935
Creator: Hoare, S. C.
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