Question: A mine with an open pit: Upper radius: 800 m Base radius: 150 m Heigh: 200 m The mine must be pushed back 50 m

A mine with an open pit:

Upper radius: 800 m

Base radius: 150 m

Heigh: 200 m

The mine must be pushed back 50 m back to extract more materials, if the rock density is 3.2 g/cm3 and the price to truck the rock is $3.00 per tonne. What's the total cost of the excavation?

How many tonnes of copper could be recovered if the volume of the frustum of a cone = A mine with an open pit: Upper radius: 800 m Base and the strip ratio is 0.75 and the ore is 1.5% copper.

31h(a2+b2+ab)

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