SPQ chart, page-637

There is no quandry. If the Bottletree 4 holes delivers a porphyry with more 1% Cu results and it will be the focus. The Steam Engine ore could be processed through a Cu-Au processing plant at Bottletree. If Bottletree does not deliver the results and we can still build a 20-30,000oz/p.a. plant at Steam Engine and make money. We get spoiled these days with large deposits being the expectation. I remember the 1980's when 1m tonnes @ 3g/t Au was a typical exploration target. Mines with their own processing plants were successfully developed on these kinds of ore bodies.

As to the large tonnage at rubbish grade being quoted for another company by @DavidW I would be gobsmacked if the mine was processing anything less than 0.35% Cu. Therefore the tonnage is not a billion tonnes but some 1/3 of that. Depending on the ore geometry and the profitable tonnage may be even lower.