Which of these tasks does NOT cause silica dust to enter into the air?
A. Sawing wood.
B. Cutting stones and blocks.
C. Demolition of concrete floors or screeds.
D. Sweeping up rubble
Answer:A
Which of these tasks does NOT cause silica dust to enter into the air?
A. Sawing wood. B. Cutting stones and blocks. C. Demolition of concrete floors or screeds. D. Sweeping up rubble