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What constitutes economic grades in drill core?

April 26, 2017constitutes core drill Economic grades

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What constitutes economic grades in drill core?

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Economics are determined as a function of grade, tonnage, the price of the commodity. There is one producing open pit palladium mine in North America and the average grade of the deposit announced in their mine expansion plans is less than 2 g/t. Generally speaking lower grade deposits require higher tonnages and higher daily rates of production to make them economic.