Crash and fire-proof

I am always interested to see what interests other people and when I came upon Jeffrey Milstein's "Black Boxes" I was interested. Wish it would have been my idea. After further research I leaned that...
"It was Dr David Warren who first thought of the idea for a machine that would record the voices and instrument readings in the cockpit of an aeroplane. Dr Warren worked as a scientist at the Aeronautical Research Laboratory in Melbourne, Australia. In the 1950's a number of Comet jet-powered airliners had crashed and a cause for the disasters could not be found. David Warren thought that a recording of the pilot and other members of the flight crew, as well as instrument readings at the time of the crash, might give clues as to the cause of a crash. No one was very interested in his idea." Via