Roger Boisjoly, 73, Dies; Warned of Shuttle Danger

nytimes.com — Mr. Boisjoly wrote a portentous memo six months before the Space Shuttle Challenger’s explosion, warning that if it was too cold, seals connecting sections of the shuttle’s rocket boosters could fail. Feb 5, 2012 View in Crawl 4

Roger Boisjoly, 73, Dies; Warned of Shuttle Danger