Galileo Mining Advances Drilling at Mission Sill for PGM and Nickel

Galileo Mining is currently conducting a 2,000-meter drilling program at its Mission Sill prospect, with completion expected in two weeks. Investors are keenly awaiting the results, as these assays will provide valuable insights into the mineral potential of the area.

Excitement on the Horizon

Managing Director Brad Underwood expressed enthusiasm about the ongoing reverse circulation (RC) drilling. He highlighted the positive results from earlier aircore drilling that indicated significant mineralization across extensive strike lengths.

Continuing Exploration

Underwood noted, “We are thrilled to initiate RC drilling at Mission Sill, where our previous drilling efforts revealed intriguing anomalous results.” The company remains optimistic about uncovering new deposits of PGM, copper, and nickel.

Link to Earlier Results

The latest drill holes are strategically placed near previous anomalous intercepts. Data released on March 19, 2026, detailed grades in 3E (palladium plus platinum plus gold, measured in grams per tonne).

Identifying Target Zones

At Mission Sill, exploration focuses on two consistent zones of PGM mineralization situated close to the boundary between ultramafic and mafic rock units:

• Zone A: Over 1.4 kilometers of strike length.
• Zone B: Over 2 kilometers of strike length.

Limited RC drilling conducted in December 2025 indicated shallow sulphide mineralization in both zones, revealing it within separate pyroxenite units.

Importance of Mission Sill in Context

The significance of the Mission Sill prospect is enriched by the discovery of Callisto in 2022, noted as the first of its kind in Australia and comparable to the Platreef deposits in South Africa. The Norseman project area has revealed several mineralized sills, and the current drilling program is designed to explore deeper and along strike from previously identified sulphide mineralization.

Callisto's Mineral Resource Estimate

The mineral resource estimate for Callisto, as of October 2, 2023, stands at:

• 17.5 million tonnes @ 1.04g/t 4E, 0.20% Ni, 0.16% Cu (2.3g/t PdEq)

The exploration plans include testing the gabbro-ultramafic contact for the first time and one hole intended to assess potential bedrock mineralization beneath the regolith anomaly at Mission Sill South.

Fully Funded for Exploration

According to the company’s Quarterly Cash Flow Report, Galileo reported approximately $6.9 million in cash at the end of the September quarter (October 26, 2026). This ensures the company is fully funded to pursue its exploration initiatives effectively.

Ongoing and Upcoming Activities

In addition to the Mission Sill drilling, Galileo is engaged in several activities, including:

• A recently completed aircore program at Callisto North, with assay results pending.
• Reconnaissance drilling within a 20-kilometer prospective strike surrounding the Callisto resource.

Underwood emphasized the extensive potential of their 250 square kilometer project area as they continue their exploration efforts.

What's Next for Galileo Mining?

Looking ahead, Galileo Mining has several key developments on the horizon:

• The completion of RC drilling at Mission Sill is anticipated within two weeks of the November 9, 2026 announcement.
• Assay results from Mission Sill are expected approximately six weeks post-drilling completion.
• Pending assays from the Callisto North aircore program.

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