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in Olympiad by (30 points)

A conveyor belt is designed to convey ore from an underground mine to surface at a rate of 600t/h. The resulting stockpile has a height of 12m. Given that the angle of repose of the ore is 45o and density is 2.5t/m3.

Calculate:

a)     The total tonnage of ore reserved in the stockpile.

b)    Time taken to create the stockpile given that the average conveyor efficiency is 0.85.

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