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Long Beach, Calif, silences noisy manhole covers
To eliminate noise caused by loose manhole covers, city of Long Beach uses rubber ring fastened by adhesive compound to cleaned bearing surface.
Long Beach, Calif, silences noisy manhole covers
To eliminate noise caused by loose manhole covers, city of Long Beach uses rubber ring fastened by adhesive compound to cleaned bearing surface.
Long Beach, Calif, silences noisy manhole covers
Am City
Kennedy, R.E. (author)
American City ; 63
1948
Article (Journal)
English
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