The Thiokol "don't launch/do launch" Challenger memo

I have added a copy of the hand-written document that is historically
interesting - and, frankly, kinda sad - a copy of the presentation
put together by the Morton Thiokol engineers the night before the
Challenger launch where they show that chances were good that the
seals would leak and the Shuttle shouldn't fly. It's a demonstration
of how the Morton Thiokol engineers foresaw trouble with Challenger
the day before flight, and what management did about it.


http://www.up-ship.com/drawndoc/drawndocsale.htm