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
Manual labor Artisanal craftsmen have proved particularly promising subjects for job retraining. The discipline required for good manual labor serves them, as does their focus on concrete problems rather than on the flux of process-based, human relations work. For this very reason it has proved easier to train a plumber to become a computer programmer than to train a salesperson; the plumber has craft habit and material focus, which serve retraining. Employers don't often see this opportunity because they equate manual routine with mindless labor. Richard Sennett, The Craftsman Making coal miners into programmers work