17 over the next several years. Each of these is a major producer in its own right, and this slide shows the growth potential for the discovery for the Goldrush and Robertson discoveries only. Cortez is a multi-mine producing complex that we think has continued upside potential and our exposure expands the entire complex. Let me turn now to Mount Milligan. In September, Centerra announced a ten-year mine life extension to 2045. As the largest single interest in our portfolio in terms of revenue and NAV, this extension has a meaningful portfolio level impact for Royal Gold. The average annual production through 2042 is expected to be approximately 150,000 ounces of gold and 69 million pounds of copper, followed by three years of processing of low- grade stockpiles. A 10% expansion to mill capacity is planned for 2028. This extension adds longevity, stability and predictability to our revenue base. Exploration is ongoing and the resource remains open to the west. Centerra is actively drilling in that direction, and the new tailings facility is being designed with potential expansion in mind. Centerra has expressed optimism that mine life could extend well beyond 2045. We're very pleased that the largest asset in our portfolio has at least two more decades of mine life with the potential for further growth beyond that. Next is Khoemacau, a high-quality copper silver operation in Botswana. We hold a 100% silver stream and the mine currently has a life to at least 2040. Royal Gold helped finance the original construction when the mine was ramping up to produce 60,000 tons of copper and 1.8 million to 2 million ounces of silver per year. MMG has now broken ground on a major expansion at Khoemacau. The $900 million program includes a new 4.5 million ton per year plant, raising total processing capacity to more than 8 million tons per year, and copper production to 130,000 tons a year. The throughput increase will be achieved by mining several new deposits in addition to expanding the currently operating Zone 5 mine. The new Mango deposit is within our stream AOI, and both Zone 5 and Mango will be processed in the new higher capacity process plant. We expect the expansion to increase our silver deliveries by nearly 35% on a life-of-mine basis. Drilling results below the Zone 5 resource at 1,300 meters have confirmed ore body continuity down to 1,800 meters, and MMG is considering a further capacity increase up to a target of 200,000 tons of copper per year. This is another multi- decade material asset for Royal Gold, run by a well-capitalized counterparty with the resources to execute the expansion plans. Moving to Kansanshi, one of Africa's largest copper mines and in our newest principal asset. We acquired this gold stream interest in 2025, and we expect it to provide steady long-life cash flow with a mine plan that extends through at least 2049. Kansanshi is a copper mine with a relatively small portion of revenue from low-grade gold production. Our stream ties gold deliveries to copper production which should smooth out the delivery profile as we are not exposed to gold grade or recovery risk.