v. 1. R.M.S. Titanic sinks (1912) ; Andrea Doria sinks (1956) ; Exxon Valdez runs aground (1989) ; U.S.S. Squalus sinks (1939) ; U.S.S. Thresher sinks (1963) ; U.S.S. Scorpion lost (1968) ; U.S.S. Shenandoah crashes (1925) ; R-101 crashes (1930) ; Hindenburg explodes (1937) ; BOAC Comets explode (1954) ; Lockheed Electras crash (1959, 1960) ; United Airlines DC-8 and TWA Constellation collide (1960) ; American Airlines DC-10 crashes (1979) ; Japan Airlines Boeing 747 crashes (1985) ; United Airlines Boeing 747 explodes (1989) ; El Al Boeing 747-200 crashes (1992) ; Apollo 1 catches fire (1967) ; Soyuz 1 crashes (1967) ; Apollo 13 oxygen tank explodes (1970) ; Skylab's meteoroid shield fails (1973) ; Challenger explodes (1986) -- v. 2. Chevrolet Corvairs roll over (1960-63 model years) ; Ford Pintos explode (1971-76 model years) ; Austin Dam fails (1911) ; Vaiont Dam landslide (1963) ; Tacoma Narrows Bridge collapses (1940) ; Zilwaukee Bridge fails (1982) ; Schoharie Creek Bridge collapses (1987) ; MGM Grand Hotel fire (1980) ; Hyatt Regency Hotel walkways collapse (1981) ; Ocean Ranger rig sinks (1982) ; SL-1 reactor explodes (1961) ; Three Mile Island reactor melts down (1979) ; Tsuruga radioactive waste spills (1981) ; Chernobyl reactor explodes (1986) ; DDT insecticide contamination (1939- ) ; Love Canal toxic waste site (1942-80) ; Minamata Bay mercury poisoning (1955- ) ; Agent Orange contamination (1961-71) ; Union Carbide toxic vapor leak (1984) ; Diethylstilbestrol (DES; 1940-79) ; Thalidomide (1950s-60s) ; Silicone-gel implants (1960s- ) ; Dalkon Shield Intrauterine Device (1970s).