Yes. Yes to all of that. So, the flow sheet at the moment, and the scoping study, was a combination of a reduction in volume and an increase in gold feed through a flotation process route. And then a leach oxidation, partial oxidation, just on a leach pad. And then you combine that so you have more gold with less feed and you increase the current processing capacity by 50% -- 8-12 million tonnes a year. And what our team has -- and that's worked. It's a proof of concept at work. So, the challenge is the leach on the heap because, as you know, it's so hard to get a leach uniform and it takes up space. And PV has got limited space. It's one of the biggest open pit mines around and it's short of actual space to put things. In both Tongon and in Kibali, we have a float circuit and an ultrafine grind. We are the leaders in ultrafine grinding at Randgold. We've taken that technology to another level. And we actually can control the oxidation in that ultrafine grind because of the inherent heat generation in the process. And at the same time, the team at PV have been doing vat leaching or tank leaching, which is also a more controlled environment. And so if we do away with the leach pad and we put it into a more controlled flow sheet, it's the same cost, more or less, it's much more efficient, and our size of processing plants, both in DRC and in Mali, are what we require as far as processing capacity. So, we've got a perfect example -- proof of concept. So, the engineers from PV have just been up there to West Africa to have a look at our processing and we're now busy refining that test work. And then that will go toward a feasibility study. And so we're pretty sure that -- and, again, in the new team, we're agile. So, we don't go through these long phases of scoping, pre-feasibility. When you get the thing to work, we will leapfrog a step. And so we're pretty sure that we will bring that whole feasibility forward. We've got time because it's 2022 we need it by. Right, Mark? So, 2022. We've got time to get it done properly. And, with that, we've got a number of options on the tailings storage. Because, at PV, the storage is not just about tailings, it's about the potential asset drainage waste that you've got to impound. And we've got a number of options on that. And it's with that that we free up the foot print and can push back and coalesce the two pits and unlock a whole lot of resource ounces into reserve. So, it's a very -- and the capital costs are -- we haven't got to reviewing them but they're not going to be more than the current estimates for that project.