Pick out the correct statement?

A. Noise from vibrating chutes can be reduced by lining the metallic chute with rubber

B. Noise from ball mills can be dealt with by fibre glass lined enclosures

C. Noise of conveyor belt system is reduced by using urethane coated cloth conveyor belts and

D. ber/plastic covered metallic rollers

E. All A., B. & C.

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