Mechanical Operations
Which of the following mechanical conveyors does not come under the division 'carriers'?

Belt conveyor
Screw conveyor
Apron conveyor
Bucket elevator

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Mechanical Operations
Arrange the following size reduction equipment in the decreasing order of the average particle size produced by each of them.

Fluid energy mill, Ball mill, Jaw crusher
Ball mill, Jaw crusher, Fluid energy mill
Jaw crusher, Ball mill, Fluid energy mill
Fluid energy mill, Jaw crusher, Ball mill

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