_ For achieving maximum capacity of the ball mill, the ball charge should be equal to about __________ percent of the ball mill volume.$?

_ For achieving maximum capacity of the ball mill, the ball charge sho

1.	_ For achieving maximum capacity of the ball mill, the ball charge should be equal to about __________ percent of the ball mill volume.$?
A.	10
B.	25
C.	50
D.	75
Answer» D. 75