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Vault Strategic Mining Engages Rangefront Mining Services For Maiden Exploration Program At Historical Mirage-Mariposa Tungsten Mine
Vancouver, British Columbia - May 15, 2026 - TheNewswire - Vault Strategic Mining Corp. (TSXV: KNOX) (OTC: KNXFF) (FSE: M850) (WKN:A41WE4) ("Vault" or the

About this update from Vault Strategic Mining Corp.
[{"type":"text","content":"Vancouver, British Columbia - May 15, 2026 - TheNewswire - Vault Strategic Mining Corp. (TSXV: KNOX) (OTC: KNXFF) (FSE: M850) (WKN:A41WE4) (\"Vault\" or the \"Company\") is pleased to announce that it has engaged Rangefront Mining Services (\"Rangefront\") to complete the Company's maiden exploration program at the Historical Mirage-Mariposa Tungsten Mine, included within the Gray Eagle Project located in the Bishop Mining District, Inyo County, California. The initial field program is designed to revisit historical mine areas, verify accessible historical workings and surface exposures, collect modern geological and sampling data, and identify priority targets for future drill testing. The ultimate objective of the program is to assess the historical mine setting and develop targets that may support future work aimed at confirming and potentially expanding the historical tungsten resource described in historical records. Quinn Field-Dyte, CEO of Vault Strategic Mining Corp., stated: “Rangefront’s engagement marks an important step in advancing the Mirage-Mariposa historical tungsten mine. Tungsten is increasingly recognized as a strategic critical mineral, and federal programs with mandates to prioritize domestic and allied critical mineral supply chains continue to highlight the importance of revisiting historically productive mineral districts. Mirage-Mariposa’s documented historical tungsten resource provides a meaningful foundation for renewed evaluation under modern standards. Our maiden program is designed to place experienced geologists back on the ground, revisit known historical mine areas, collect modern data, and generate priority drill targets in a disciplined and technically focused manner to confirm and potentially expand upon the historical understanding of the deposit.” Maiden Exploration Program Rangefront's proposed field program will focus on modern geological evaluation of the historical Mirage-Mariposa tungsten system. The proposed scope includes: Detailed mapping of the intrusive-carbonate contact and skarn zoning, including garnet, epidote, and scheelite-bearing zones; Underground and surface verification of historical zones, including accessible workings and mine dumps; Channel sampling across tactite and adjacent structures, with appropriate QA/QC procedures; Portable ultraviolet work ...