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The National Bureau of Standards received, in August 1940, a number ofsamples of bridge wire taken from thecables of the General U. S. Grant suspensionbridge over the Ohio River at Portsmouth,Ohio. These cables were 71/8 in. indiameter under the wrapping and each wasmade up of 1458 ungalvanized wires ofNo. 8 gage in 3 parallel-wire strands. Thechoice of ungalvanized wire was basedon the previous satisfactory performanceof similar wires in other bridges overperiods of 20 to 50 yr. of service(i).
Pollard, R. E.
Metallurgist, National Bureau of Standards,