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The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be_________________?

/ Mechanical Operations / By
The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be_________________?

A. 0.5 Wi
B. Wi
C. 1.34 Wi
D. 3.34 Wi