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Question
Pick out the correct statement.
Options:
A .  Noise from ball mills can be dealt with by fibre glass lined enclosures.
B .  Noise from vibrating chutes can be reduced by lining the metallic chute with rubber.
C .  Noise of conveyor belt system is reduced by using urethane coated cloth conveyor belts and rubber/plastic covered metallic rollers.
D .  all (a), (b) & (c).
Answer: Option D
Answer: (d).all (a), (b) & (c).

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