NexGen Energy's Patterson Corridor East (PCE) uranium discovery, located 3.5 km east of the Arrow Deposit in Saskatchewan's Athabasca Basin, has produced extraordinary high-grade results in 2025: RK-25-256 returned 0.5m at 74.8% UO₂ (May 2025 — among the highest-grade uranium assays ever recorded globally); RK-25-240 returned 10.0m at 3.95% UO₂ including 0.5m at 33.3% UO₂ at 670m depth; RK-25-232 showed a "transformational" high-grade intersection comparable to Arrow's early delineation phase. CEO: "PCE is evolving in real time into a world-class system in its own right." The PCE discovery was first made in February 2024 and has rapidly developed into an Arrow-scale system. NexGen is implementing infrastructure enhancements at PCE with camp commissioning completed Q1 2026.