Taking safety to a new level.
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D002028:Building Codes; D004559:Electric Wiring; D004607:Elevators and Escalators / Q000592:standards*; D005388:Fire Extinguishing Systems; D005390:Fires / Q000517:prevention & control*; D006801:Humans; D017751:Safety Management / Q000592:standards; D012906:Smoke; D014481:United States