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Key Differences Between Open Pit Mining And Underground Mining

2019-1-10The study envisioned the usage of open pit mining at the Rovina and Colnic deposits and underground mining at Ciresata, and recovery via crushSAG and ball grindflotation. The PEA estimated a pre-tax NPV8 of 316mm and IRR of 15.7 using 900oz Au and 2.25lb.

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