8609-A41. Students from Portland State College held a noise parade on Broadway in downtown Portland on the evening of October 23, 1952, in celebration of their homecoming weekend. The parade ‘floats’ consisted of two flatbed trucks and many cars. This photo shows one of the trucks with students using two pneumatic jack hammers bouncing against a steel boiler plate. Other students are hammering an iron pipe with sledgehammers and crowbars. Three steam whistles were responsible for the most ear-splitting shrieks.
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