Safety cut rope axe man In the first nuclear reactor, constructed by Enrico Fermi in 1942 under the bleachers of the University of Chicago football stadium, the control rods were held up by a manila rope. A man with an axe was told to cut the rope if the reactor got out of hand. This "safety cut rope axe man" is supposedly the origin of the term SCRAM for an emergency shutdown procedure. Brian Hayes, Infrastructure: A Guide to the Industrial Landscape wordsacronymsenergy
The history of all things He knew that any given thing on the face of the earth could reveal the history of all things...Actually, it wasn't that those things, in themselves, revealed anything at all; it was just that people, looking at what was occurring around them, could find a means of penetration to the Soul of the World. Paulo Coelho, The Alchemist A simple grain of sand history