RE: RE: Wow!!! 3.3% Copper and 8.6% Zinc Over 7.3HLO will need a lot more higher grades to make this a mine..... The resource estimate used a slilly low cutoff value to increase tonage.....JMHO
Notes:
1. Mineral resources are not mineral reserves and do not have demonstrated
economic viability. There is no certainty that all or any part of the
mineral resources estimated will be converted into mineral reserves.
2. Mineral resources are estimated at a net smelter return (NSR) cut-off of$20 (U.S.) per tonne and $45 (U.S.) per tonne for open pit and underground
respectively.
3. Metal prices used are $3 (U.S.) per pound copper, $1.05 (U.S.) per pound
zinc, $1,000 (U.S.) per ounce gold and $15 (U.S.) per ounce silver.
4. Metallurgical recovery factors assumed were 92 per cent for copper, 83
per cent for zinc, 65 per cent for gold and 57 per cent for silver.
5. The mineral resources are reported at a cut-off grade to reflect
reasonable prospects for economic extraction, which were evaluated by
designing a series of conceptual pit shells using the Lerchs-Grossman
optimizing algorithm.
6. Common values for operating costs and smelter terms were assumed.