Resolution Minerals (RML) investor relations material

Project and geology

• 15,000-acre Idaho project with a 100% interest; Antimony Ridge targets antimony and Golden Gate targets gold and tungsten, adjacent to Perpetua Resources’ Stibnite project.

• Management describes Horse Heaven as an intrusion-related system with the same geology as Stibnite; the area historically produced tungsten and antimony.

• Stibnite road upgrades benefit access; a planned transmission line will cross Horse Heaven to serve Stibnite.

Antimony development

• Antimony Ridge has high-grade veins averaging 30%-50%, up to 2 ft thick, along historic trenches; the target spans 1,000 m, is about 700 m wide, and has over 250 m of vertical elevation.

• Permitting is underway for 50 drill sites, with drilling planned for next season; management says the sites could support 250 holes to test the veins laterally and at depth.

• Stockwork between veins carries 0.5%-2% antimony; a surface sample graded 49% antimony and 1,420 g/t silver.

• About 35 tons of high-grade material collected from open pits will support hydrometallurgical testing and a pilot plant; a hub-and-spoke processing model is under development.

Gold and tungsten

• Golden Gate South returned 305 m at 0.64 g/t gold from surface; drilling is testing whether North and South connect along a 2 km+ fault-zone corridor, 400-700 m wide and over 1,000 ft vertically.

• The latest three reported holes included gold veins grading 7 g/t and 14 g/t; management views these as potential feeder structures requiring further drilling.

• Golden Gate historically produced tungsten intermittently at 1.5%-2% from the 1950s to 1980; scheelite indications at South support further tungsten testing, with results expected.

• Johnson Creek holds 2,000 tons of stockpiles averaging ~1.8% tungsten, plus an estimated 4,000 tons by the old mine portal; discussions are underway on third-party processing for potential near-term cash flow.