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Spartan Metals Corp. Reports Assay Results From Rees Tungsten Mine At Eagle Project
Spartan Metals Corp. announced assay results from recent sampling conducted at its past producing Rees Tungsten Mine located within the Rees Claims at its 100% owned Eagle Project, Nevada. Rock chip samples from inside the Mine assayed at 6.76% and 3.75% tungsten trioxide (WO3), which are among the highest tungsten grades reported at the Eagle Project. Historic United States Bureau of Mines (USBM) sampling from within the Mine returned 8.48%, 1.50%, 0.83%, and 0.83% WO3. Historic USBM surface sampling at Rees returned 3.40%, 1.80%, and 1.46% WO3. Historic production records detail approximately 1,306 Short Ton Units (stu) or 1,185 Metric Ton Units (mtu) at an average grade of 3.51% WO3 was shipped in 1954 and 1955. The Rees Tungsten Mine is the third past producing tungsten mine at the Eagle Project where Spartan has validated reported historic tungsten grades that are in excess of 1% WO3, which suggests potentially significant tungsten endowment across the Eagle Project. Initial results confirm past producing grades and further support the belief that the Eagle Project represents one of the highest-grade tungsten districts in the United States. These samples were collected as part of the exploration program announced on May 21, 2026 and were taken from within the Rees Mine with approximate locations shown in Figures 2 and 3 with results listed in Table 1. The Rees Mine was entered with the assistance of mine safety professional from High Desert Mining from Salt Lake City, UT. High Desert was engaged to evaluate the Spartan's past producing mines (Tungstonia, Rees, and Antelope) for potential reopening, which provided Spartan an opportunity to safely enter the abandoned mine to conduct validation sampling. Samples RE-2026-001 and RE-2026-002 under ultraviolet light with the scheelite mineralization fluorescing as blue or bluish white. Images taken of the mineralized faces within the mine walls showing pervasive scheelite mineralization. Additional images and videos of the Rees Tungsten Mine are located on Spartan's website. The Rees Tungsten mine results are particularly notable when viewed in a global tungsten context. Published geological references commonly cite typical tungsten skarn grades in the range of approximately 0.3% to 1.4% WO3, with many large porphyry, disseminated, greisen and stratabound tungsten systems reported at lower average grades, often below 1% WO3. By comparison, Spartan's underground samples at Rees grading 6.76% and 3.75% WO3, historic USBM samples of up to 8.48% WO3, and documented historic shipments averaging 3.51% WO3 highlight the exceptional tenor of tungsten mineralization present within the Mine. While selected rock samples, historic samples and historic production records are not necessarily representative of broader mineralization and do not constitute a Mineral Resource or Mineral Reserve, the repeated confirmation of +1% WO3 grades at Rees, Yellow Jacket and Tungstonia reinforces Spartan's view that the Eagle Project hosts a potentially significant, district-scale tungsten system with multiple past-producing mines and multiple styles of mineralization. Spartan will continue to execute its 2026 exploration program as discussed in the May 21, 2026, announcement including: Continued surface sampling of soils and rocks - including backpack drilling - over claims acquired in November 2025 to potentially extend previously identified tungsten, silver, and rubidium soil anomalies at the Tungstonia. Continued rock sampling and backpack core drilling at the Rees Claims to cover the past producing Rees Tungsten and Antelope Mine areas. Evaluation of a geophysics program for the Rees Claims. Evaluation of establishing safe entry for all past operating mines at the Eagle Project. In Process: Ground geophysics surveys at the Tungstonia Claims to inform depths of existing 2+km tungsten-silver veins and potential tungsten skarn mineralization that is coincident with tungsten-silver-rubidium soil anomalies and at Yellow Jacket. Early to mid-August: Approximately 3,000 meters diamond core drilling at high priority targets identified through surface sampling and geophysics surveys at the Eagle Project. Table 1 Sample results from Rees Mine with selected USBM samples (widths as reported, true widths are not yet known): Sample ID WO3(%) Ag(g/t) Width(m) Comments RE-2026-001 3.75 1.1 - Rock chip sample in adit from approximately 20m from mine entrance RE-2026-002 6.76 1.0 - Rock chip sample in adit from approximately 30.5m from lower crosscut entrance approximately 10m vertically below mine entrance TG-RK-GA-002 0.75 11.4 - Grab sample from mine dump near mine entrance BM 1542 1.80 1.77 Channel sample at surface BM 1547 0.72 0.61 Channel sample at surface BM 1548 0.69 0.49 Channel sample at surface BM 1549 1.46 0.27 Channel sample at surface BM 1550 3.40 0.94 Channel Sample at surface BM 1551 8.48 0.55 In adit approximately 4.9m from mine entrance BM 1552 0.84 0.55 Near #1 raise approximately 1m from adit floor BM 1553 1.50 0.61 From bottom of adit floor below BM 1552 BM 1554 0.83 0.34 East side of #1 raise about 6.1 m above adit floor. Samples were submitted to American Assay Lab (AAL) of Sparks, Nevada, which is a certified and accredited laboratory, independent of the Company. Samples are prepared using industry standard-prep methods and analyzed using method IM-4AB52 (52 element suite: 0.5g 4-acid plus boric acid hot block, ICP-OES + MS plus IO-NFEx [Sodium Peroxide Fusion, ICP-OES] for W over 500ppm). AAL undertakes its own internal coarse and pulp duplicate analysis to ensure proper sample preparation and equipment calibration. Spartan's QAQC includes regular insertion of CRM standards, duplicates, and blanks with a stringent review of results completed by the Company's Qualified Person, Brett R. Marsh, President and CEO of Spartan Metals. The technical information contained in this news release has been prepared under the supervision of, and approved by Brett R. Marsh, CPG. Mr. Marsh is President and CEO of Spartan Metals Corp. and a qualified person as defined under National Instrument 43-101 - Standards of Disclosure for Mineral Projects.