[crististm]

"In one famous case, a manufacturer of wire rope sold inferior material to the bridge company. The shady contractor, J. Lloyd Haigh, escaped prosecution. But the bad wire he sold is still in the bridge, as it couldn’t be removed once it was worked into the cables. Washington Roebling compensated for its presence, ensuring the inferior material wouldn’t affect the strength of the bridge."

http://history1800s.about.com/od/bridgebuilding/a/brooklynbr...