RE:RE:RE:RE:Graffiti: PearlsThe grade at Resolution is lower at 1.47% copper. But they're block caving a cavern a mile and half long by 850 feet deep. It's a massive porphyry, so they can do that. It's not just a question of grade, but also ease of extraction. Contrast that with the gently dipping, narrow 4 to 6 meter room and pillar operation at Kakula.There is lots of ore. Getting it out, without having 400, 500, or 600 meters of rock coming down on your head is the hard part. Looking at the tables of the most recent June study, final extraction at 500 meters was limited to 53%. Recoveries are much better at shallower depth. Some of these pillars, at 20 by 20 meters, are the size of a small house. They won't get all the ore. Dilution at the hanging/footwall over such narrow widths is also a factor. Resolution and Kakula are both underground mines, but that's where the resemblance ends.