OSHA & light curtains.
Thomson
Robert
R
Frost Controls, Inc., Smithfield, R.I., USA.
D000062:Accidents, Occupational / Q000517:prevention & control*; D006801:Humans; D016272:Occupational Health; D018570:Risk Assessment; D017751:Safety Management / Q000592:standards*; D014481:United States; D014489:United States Occupational Safety and Health Administration