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On this point, in a strange coincidence, the rivets on the Titanic very much lead to it sinking within a mere three hours: "the wrought iron in the rivets contained three times today’s allowable amount of slag (the glassy residue left behind after the smelting of the iron ore). The slag made the rivets less ductile and more brittle than they should have been when exposed to very cold temperatures—like those typically found in the icy seawater of the North Atlantic. This finding strongly suggested that Titanic’s collision with the iceberg caused the rivet heads to break off, popped the fasteners from their holes and allowed water to rush in between the separated hull plates." NIST Reveals How Tiny Rivets Doomed a Titanic Vessel WWW.NIST.GOV When the remains of RMS Titanic were discovered more than 3,800 meters (12,500 feet) beneath the surface of the North...