Now when I was saying, here's a picture of what this underground development looks like. As you can see, I went into the areas of the pit that, that encompasses. So we have the Eastern Porphyry, which you can see in the grade profile, to the side with an open pit resource as well as underground workings. This is the north part of the pit going down, and this is the south part of the pit going down. You'll see all the works and details. This takes a lot of time to do of your underground development, your tunneling and costing that out and things of that nature. So with regards to the economics of the PEA, it's on average 61,000 ounces or 62,000 ounces a year over 17.6 year of mine life. As I said, you increase the plant, increase mining rates that gets higher and moved up. The annual free cash flow is around $64 million at $3,000 an ounce. Growth capital in the first four years, as I mentioned, is phased in around $90 million. Over the life of mine, it's $185 million. Cash costs are around $1,000, $1,200 for all-in sustaining costs. I suspect that it is well in the lowest quartile. Pretax NAV of $1.2 billion and $770 million after tax, net present value all at $3,000 gold. This gives an overview of the breakdown of this. Now we're getting into real data here. The first two columns or first two rows are for the plant upgrade. Then you have your underground workings. You see it detailed by year. We do have to have a tailings expansion for the open pit. For the underground, we're going to have a paste backfill. So what that entails is you're basically -- when you mine out your underground workings, you put it back with a little bit of cement and it's a paste backfill, so you have a paste backfill plant. And so your tailings go back underground where they came from versus having to have a big tailings facility. That reduces operating risk from our perspective. We have line tailings facilities that are quite safe. In Tanzania, the regulations are quite high around tailings. So we sleep at night as a result of that, but having a paste backfill will be good. You'll see a breakdown here, and I don't think anybody has really seen this breakdown before around how you build up your cash cost, and how you build up your total all-in sustaining cash cost to the $1,000 an ounce and $1,200 an ounce, and mining, you're processing general and admin royalty costs, selling costs, quite detailed.