## copper determine the grade aelabworld

copper determine the grade Calculation of Ore Tonnage Grade from Drill hole Samples Thus, the calculations of amount of copper in the one block of ground, when divided in different ways, instead of agreeing, differ by 19,937.53 metric tons, while the grade differs 0.610 per cent., the second calculations showing 35.63 per cent, more copper than the first.

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