In a size reduction crushing operation, feed size is 100 to 300 mm, while the product size is 10 to 50 mm. This is a case of the __________ crushing.

In a size reduction crushing operation, feed size is 100 to 300 mm, wh

1.	In a size reduction crushing operation, feed size is 100 to 300 mm, while the product size is 10 to 50 mm. This is a case of the __________ crushing.
A.	primary
B.	secondary
C.	fine
D.	ultrafine
Answer» C. fine

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In a size reduction crushing operation, feed size is 100 to 300 mm, while the product size is 10 to 50 mm. This is a case of the __________ crushing.

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