Stock Photo - 1968 - Strong Wapple: Western Electric's Otis Perkins wields wrench near waffled concrete ceiling in basement of the company's new plant at Shreveport, Louisiana, Waffling permits many holes to be drilled for pipes without weakening overall structure. The plant has twenty-six acres of manufacturing space under roof on a 262-acre site. It produces several varieties of telephone for the Bell Sysyem. (Credit Image: © Keystone Pictures USA/ZUMAPRESS.com)

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