Mechanical Operations
Bond crushing law

States that the work required to form particle of any size from very large feed is proportional to the square root of the volume to surface ratio of the product
Is less realistic in estimating the power requirements of commercial crushers
Calls for relatively less energy for the smaller product particles, than does the Rittinger law
States that the work required for the crushing is proportional to the new surface created

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Mechanical Operations
Cumulative analysis for determining surface is more precise than differential analysis, because of the

Fact that screening is more effective
Assumption that all particles in a single fraction are equal in size
Assumption that all particles in a single fraction are equal in size, is not needed
None of these

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