Nobel Identifies New Mineralized Porphyry Copper System, Cuprita Project, Chile TORONTO, March 09, 2026 (GLOBE NEWSWIRE) -- Nobel Resources Corp. (TSX – V: NBLC) (the “Company” or “Nobel”) is pleased to announce that it has identified a new mineralized, copper porphyry system at its Cuprita project (“Cuprita” or the “Project”) in northern Chile. Nobel is conducting the first ever diamond drill program on this highly prospective project. Exploration surveys over the past year by Nobel’s Chilean technical team identified key geological and geophysical characteristics, typically associated with mineralized porphyry copper systems in this region and commenced a diamond drill campaign in January (see the Company’s news release dated January 16, 2026 for further details). The fourth drill hole in the Company’s drill program (CUP004) has intersected more than 100 meters of copper-bearing, mineralized porphyry. Assays are pending for all of the drilling to date and will be disclosed by the Company when received. It is not expected that the entire interval will be of commercially exploitable grade, however, porphyry systems are large targets and the technical results this early in the program are highly encouraging. Drill hole CUP 003 was the first hole that appeared to clip the edge of the system and intercepted weakly mineralized porphyry but provided important vectors based on the alteration observed in the hole. From 218 meters depth in drill hole CUP004, there is a marked increase in tourmaline veins and the rock transitions into an intrusive breccia with porphyry clasts. Copper values measured by XRF (X-ray flouresence) (Olympus INNOV-X Delta Premium XRF Analyzer) increase locally, copper values up to 1,700 ppm were measured using a portable XRF within the breccia. The XRF Analyzer is calibrated once for the altitude at which it will be operated, which is valid until it moves to a different project. A second calibration is completed each time the machine is activated by taking a reading of the Authentic Olympus Delta 316 Standardization Coin, check sample (supplied with the equipment). This calibration takes 60 seconds. Portable XRF measurements are not as accurate as assays, they are point-source measurements on a portion of whole drill core. The values are accurate for the point measured but do not represent an average grade. It is an important field tool for estimating grade to assist with drill hole planning but should not be considered representative of the overall intercept. From 285.5 m to 382 m, there is a sulfide-rich interval, characterized by an increasing density of quartz-sulfide veins, with disseminated pyrite ± chalcopyrite and locally bornite. Alteration in this zone is primarily sericite-chlorite, with moderate to strong intensity. Copper values measured using portable XRF reached up to 2.9% Copper in chrysocolla-bearing veinlets and 2.6% Cu in pyrite-chalcopyrite veinlets. The decrease in generalized oxidation and the appearance of primary sulfides suggest a transition from lithocap conditions to a mineralized domain. From 382 to 408.8 meters there is a post mineralization dike which is barren of sulfide minerals. Below the dike weakly mineralized porphyry was intercepted and the hole stopped at 460.6 meters depth. Figure 1: Location of Cuprita Project relative to copper deposits in the region. Please note information regarding adjacent properties is provided for context only and is not necessarily indicative of the mineralization, grade, continuity or potential of the Project. Readers are cautioned not to place undue reliance on statements about adjacent properties. Figure 2: Drill hole locations and locations of IP lines. Drill holes CUP001 and CUP002 tested shallow trench targets unrelated to the deeper IP anomaly below the lithocap. Figure 3: IP Chargeability section showing location of CUP004, which intercepts near the edge of the anomaly on this section. Planned hole CUP005 is approximately a 200 meters step out from CUP004 and is presently being collared. The Company’s drill program is targeting an area centered around an extensive lithocap that was identified by Nobel geologists by surface mapping on the property during 2025. The lithocap is interpreted to have developed above a porphyry related hydrothermal system. The presence of a lithocap is a key signature of mineralized porphyries in this region. At Cuprita, it is characterized by strongly silicified rock forming a resistant silica-rich matrix with abundant cavities due to leaching of minerals and pyrite boxwork textures. The lithocap is oriented along a well-defined structural corridor trending approximately N10°–20°E, and has been mapped over an area of at least 1,000 m in length and 300 m in width defining a prominent alteration zone interpreted to overlie a large porphyry system. Access road construction for the drill program has created new outcrop exposures of the lithocap beyond these dimensions so the actual extent i