Entering a permit space can prove fatal for an employee when the oxygen level is -
(A) Below 19.5 percent (B) Above 23.5 percent (C) Below 20 percent (D) Both a and b Answer: Click here
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National Examination Board in Occupational Safety and Health (NEBOSH) is a UK-based independent examination board delivering vocational qualifications in health, safety & environmental practice and management. It was founded in 1979 and has charitable status.
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