Vancouver, British Columbia - March 18, 2026 – Vault Strategic Mining Corp. (TSXV:KNOX) (OTC:KNXFF) (FSE:M850) ("VAULT" or the "Company") announces that it will undertake a strategic review aimed at optimizing its 2026 exploration season at the Letain Nickel Project ("Letain"), while concurrently advancing a broader evaluation of its United States assets as announced on January 20th, 2026.
As part of this initiative, the Company has engaged Mr. William "Bill" Feyerabend to conduct a strategic review of its recently acquired U.S. historical mining assets, with a mandate to assess their technical merits and prioritize targets to inform and refine 2026 exploration planning.
Quinn Field-Dyte, Chief Executive Officer of Vault Strategic Mining Corp., commented:
"We are very much looking forward to collaborating with Mr. William Feyerabend as we undertake a strategic review of our portfolio of critical and precious mineral assets from across North America. His independent technical perspective and extensive experience will be invaluable as we evaluate our assets and define a clear, disciplined exploration strategy for 2026. This review will help us prioritize targets, allocate capital efficiently, and position the Company for meaningful advancement across our projects."
About the Letain Nickel Project
As Announced on February 12th, 2025:

Figure 1. Rock Chip Sample Location facing South at 1,840 Meters During Margaret Lake’s Sampling program at Letain - 2021
The Letain Project mineral claims feature disseminated awaruite, a naturally occurring Ni-Fe alloy that is hosted in peridotite and minor dunite. Several peridotite-hosted zones contain fine and coarse Ni-Fe alloy grains. Surface rock chip sampling along a ridge at 1700 to 2,050 meters elevation averaged about 0.25% nickel. The Letain property covers part of the Cache Creek Terrain separated from the volcanic and sedimentary rocks of the Quesnellia Terrain by the Thibert fault to the north and the Kutcho Fault to the west. The King Salmon Fault displaces the transition between the Cache Creek Terrain and the sediments and volcanics of Stikinia Terrain. Geochemical analysis of rock chips returned values ranging from 1700-3800 ppm Ni (Source: historic rock sampling of 144 rock samples collected in 2011, assay method 1E/8FPX 4 acid digestion method, analysis by ICP-ES). SGS ran 10 samples for concentrate (I.e., heavy mineral separation) and arrived at the percentage of magnetic fraction:
Figure 2 – LET-1 (with low magnetic content) was a black dyke and not representative of the overall lithology
Awaruite mineralization occurs in 2 different habits: fine Ni-Fe alloys or larger composite grains. Fine awaruite grains (10-100 µm) are disseminated in the serpentine matrix. Ni-Fe alloys have a highly reflective white/silver colour. Larger composite grains (100-300 µm) are a mixture of Ni-Fe alloys and lesser Ni-Fe sulphides. The area is underlain by a highly differentiated peridotite with numerous porphyritic, sheared and vein-veinlet-breccia textures. In the south portion of the property, the peridotite is characterized by disseminated magnetite and chromite abundant disseminated and vein-fracture filling apple green-dark green coloured minerals such as picrolite and lizardite. In the north portion of the property the peridotite is massive, black in colour with fewer vein-fracture textures, however the change in texture of the peridotite appears to have little or no effect on the Ni-Cr-Co content which range of 1,700-3,800 ppm Ni, 1,000-3,000 ppm Cr and 100-150 ppm Co. Several peridotite-hosted zones contain fine and coarse Ni-Fe alloy grains (awaruite) that are exposed as bedrock ridges in the east-central portion of the claim group at 1,700-2,050 m elevation. Disseminated fine to coarser grain awaruite was found in serpentinized ultramafic rocks. In the north portion of the property the peridotite is massive, black in colour with fewer vein-fracture textures. Samples from the central ridge of the property delineated a 1,100 metre long discontinuous zone of coarse-grained (>100µm) awaruite. The Letain mineral property has geological similarities to the Decar nickel deposit (located 70 km northwest of Ft. St James, B.C.), which contains awaruite mineralization that is characterized as 'magnetically recoverable nickel’ and pyro-metallurgical smelting is not required to produce nickel. Vault’s Portfolio of Historical U.S. Mining Assets are as follows:- Mia Silver Project – Idaho, USA
- Mount Wheeler Historical Tungsten Mine – Nevada, USA
- Robinson Dyke Historical Gold Mine - Idaho USA
- Golden Dome Historical Gold Mine – California, USA