The formule for finding Air HP.
A. $$\frac{{PQ}}{{75}}$$
B. $$\frac{{R{Q^3}}}{{75}}$$
C. $$\frac{{P{Q^2}}}{{75}}$$
D. $$\frac{{R{Q^2}}}{{75}}$$
Answer: Option A
This Question Belongs to Mining Engineering >> Drilling And Blasting
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