PL'H did say in the webinar that UG was the likely way to go. Some OP might happen at Copper Canyon but UG more likely.
Deep is a relative term for mining.
Shanac long section
Significant vertical topography at Rogozna. 0 to 750m below an arbitrary datum shown above.
From this the main mineral zones are from 200 to 600m below surface for Shanac and CC. Probably somewhat deeper at Medenovac.
These depths do add to up front costs but are well withing the realms of regular UG mining.
For Shanac the tonnes per vertical meter are high (<=20000 max) which likely make mechanised UG mining the way to go - if feasible. Capital intensive but less labour.
Quite refractory? As asked before can you provide a reference?
Metallurgy is not going to be simple so I hope the Au is not refractory. Even if it is the Au may report into part of a concentrate where it can be dealt with at a smelter. [PL'H did mention a figure of $1M spent on mett testing - memory only so DYOR.]
Chalcopyrite does impact Au recoveries in some processes but does not mean the gold is refractory (locked inside mineral lattices that need special extraction methods).
DEG's Hemi ore is refractory (?% of it) which has led to special processing that does not increase costs prohibitively. Recognised early and been studies to work out the best way to handle it.
Certainly not going to be cheap to mine at Rogozna. UG/tricky Mett. Percentage of reconciliation of inferred to indicated (or better) is going to be important. Confirmation of Gradina/Medenovac will quickly add tonnes - grade? The nature of this system probably means some of the exploration targets are likely to come to the party as well. The bigger the better.
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Go away in May come back in September is a fairly common refrain for North American markets. Already June so may not be applicable to a couple of fairly red days on local markets.
