Bond’s work Index is the work required to reduce a unit weight from a theoretical infinite size to 80%passing ______µm.

Bond’s work Index is the work required to reduce a unit weight from

1.	Bond’s work Index is the work required to reduce a unit weight from a theoretical infinite size to 80%passing ______µm.
A.	10
B.	100
C.	25
D.	None of these
Answer» C. 25