Document RqeVvkKwNXaDY8X3MvLB7djz

National Fire Protection Association, 60 Batterymarch St, Boston, Mass 02110 Electrical Metalworking Machine Tools, No 76 National Electrical Code, No 70 Royal Society for the Prevention ofAccidents, London, England Industrial Accident Prevention Bulletin Vol II, No 118, February 1943 U S Department of Labor, Washington, D C Safety Subjects, Bulletin No 67 The Principles and Techniques of Mechanical Guarding, Bulletin No 197 689