Factor of safety

Definition and stakes

William H. Allen,  Civics and Health

“ To find out whether local machinery is adequate, the reader must enumerate the things that need to be done in his community, remembering that in all parts of the United States to-day there are sanitary laws offering protection against dangers to health, excepting some dangers not understood until recently, such as child labor, dangerous trades, lack of safety devices. ”
Source: Gutenberg

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