Vault Strategic Mining Acquires War Bond Tungsten Project in Nevada

Vancouver, British Columbia — May 13, 2026 — Leads & Copy —

Vault Strategic Mining Corp. (TSXV: KNOX) (OTC: KNXFF) (FSE: M850) has acquired a 100% interest in the War Bond Project in Nevada, USA, through a Claim Purchase Option Agreement with an arms-length vendor. The project includes the Historical War Bond Tungsten Mine, Historical Tactite Tungsten Mine, and Historical Thursday Tungsten Mine.

Nevada was ranked as the top mining jurisdiction in the Fraser Institute’s Annual Survey of Mining Companies, released on February 26th, 2026.

Quinn Field-Dyte, CEO of Vault Strategic Mining Corp., stated that the War Bond Tungsten Mine is a strategic addition to Vault’s North American tungsten and critical minerals portfolio. The company aims to consolidate and verify historical information, complete field validation, and design an exploration program to target drilling. Vault intends to engage with potential exploration crews to initiate exploration at the War Bond, Tactite, and Thursday Historical Tungsten Mines.

The War Bond claim package includes 20 unpatented lode mining claims, covering approximately 400 acres in the Delaware Mining District of western Nevada. The land package encompasses the historical War Bond Tungsten Mine, the Tactite and Thursday historical tungsten workings, and the Alex Eske historical tungsten mine area.

Historical records suggest that the War Bond, Tactite, Thursday, Old Discovery, and Knight Claims are related properties within the same tungsten occurrence area. A Western Mining History record identifies the War Bond Mine as a tungsten mine in Douglas County, Nevada, listing Tactite and Thursday, Old Discovery, and Knight Claims as secondary names.

Another MRDS-derived War Bond Tungsten Mine record identifies Tactite & Thursday, Old Discovery Claim, Knight Claims, Tungsten Valley Claim, Yellow Problem Claim, and Margret Claim as related secondary names. The record also identifies Carson Tungsten Co. as the owner, with an information year of 1952, and lists the operation category as past Producer.

Historical descriptions indicate that tungsten mineralization is associated with scheelite-bearing tactite or skarn near granite-limestone contacts. The Nevada Bureau of Mines and Geology publication Mineral Resources of Douglas, Ormsby, and Washoe Counties describes the Tactite Thursday claim as located about 15 miles southeast of Carson City, noting scheelite in a small tactite area near a granite-limestone contact.

The prospect is described as having limestone in 4 parallel ribs between tongues of granite in an area 1500'x2000'. Sediments strike n-s, dip 50 deg-70 deg e. Scheelite occurs disseminated in epidote-garnite-quartz tactite areas 30' to 100' wide formed adjacent to contact. Two main mineralized areas, an east of west zone, have been exposed. The west zone, 200'x1000', contains scheelite in narrow widths, up to 0.3% WO3. The east zone, 500' east of the west zone, is mineralized over an area 50'-100' wide, 500' long. Within this, scheelite occurs in small shoots, with values ranging from 0.25 to 0.45% WO3 over widths of 4' to 8'. A 250-ton test lot of ore, averaging 0.3% WO3, was mined from the old discovery (east) pit.

Historical assay and laboratory records from 1942 and 1943 include a selected sample from the upper location hole on Tactite Claim No. 1 at 14.40% WO3, two additional 1942 samples reporting 0.8% WO3 and 0.9% WO3, and a 1943 University of Nevada State Analytical Mining Laboratory report describing metamorphosed rock with garnet and traces of scheelite reporting tungsten trioxide of 0.35%.

The War Bond Mine record lists production for 1953, a time period of 1952 to 1953, and a grade description of approximately 0.3% to 0.45% WO3. The Tactite Thursday record further states that a 250-ton test lot of ore averaging 0.3% WO3 was mined from the Old Discovery East Pit.

The project represents a historically explored tungsten skarn system with documented scheelite-bearing tactite mineralization, historical surface workings, historical sampling, and limited historical mining or test-lot production.

The mineral properties have been subject to extensive historical exploration, development, and past commercial production. The historical information is non-compliant with NI 43-101 but is considered relevant for exploration targeting and geological interpretation.

Management believes the historical work and past production create a foundation for modern exploration. The company will complete confirmation drilling, metallurgical studies, and NI 43-101 compliant mineral resource estimates. There is no assurance that historical results will be confirmed.

Vault may exercise the option to acquire the claims by making aggregate cash payments to the Vendor of US$135,000.00, payable as follows:

Payment Schedule:

• Payable at closing: US$10,000
• Payable within 60 days after closing: US$25,000
• Payable on the six-month anniversary of closing: US$50,000
• Payable on the twelve-month anniversary of closing: US$50,000

Completion of the transaction remains subject to receipt of TSX-V acceptance or approval.

Vault Strategic Mining Corp. is focused on the acquisition and advancement of strategic and critical mineral projects in top-tier mining jurisdictions. Vault Strategic Mining Corp. trades on the TSX Venture Exchange (TSXV: KNOX), OTC Markets (OTCID: KNXFF), and the Frankfurt Stock Exchange (FSE: M850).

Historical information has been reviewed against available reports but cannot be independently verified to current NI 43-101 standards. Mr. William Feyerabend, CPG, has reviewed and approved the disclosure in this news release.

Source: Vault Strategic Mining Corp.