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
Correct Answer is: (D) Both a and b
(A) Below 19.5 percent
(B) Above 23.5 percent
(C) Below 20 percent
(D) Both a and b
Correct Answer is: (D) Both a and b
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