Grid Metals Corp. Provides Update on Eagle Copper Exploration Program and Upcoming Copper, Nickel and Cesium Exploration Initiatives

TORONTO, ON / ACCESS Newswire / May 21, 2025 / Grid Metals Corp. (TSXV:GRDM)(OTCQB:MSMGF) ("Grid" or the "Company") announced drill results from the remaining 19 drill holes at the Eagle gabbro and the completion of new geophysical surveys at the Mayville copper/nickel project in southeastern Manitoba. The drilling confirmed a 2 km mineralized trend at the eastern part of the Mayville Complex. Newly completed airborne geophysics has provided multiple targets for new discoveries and resource expansion.

The next planned Grid drill program in the Bird River area is at the Makwa nickel/copper property. Permitting for exploration drilling is well advanced and an ongoing field program at Makwa is focused on the highest priority geophysical targets from the recently completed Geotech Ltd. VTEM™ MAX electromagnetic survey. The Makwa property is subject to an option and joint venture agreement currently funded by Teck Resources Limited.

The Company is also in the process of permitting exploration drilling at the Falcon West property for cesium. The most recent drilling at the Lucy pegmatite (Q1 2024) by Grid intersected 3.20m of 4.6% Cs₂O in a >100-metre-long cesium-enrichment trend. The drill target at Lucy is a near-surface, flat-lying cesium and lithium-enriched portion of the larger Lucy Pegmatite in which most of the cesium is believed to be associated with the primary cesium ore mineral, pollucite. Pollucite is the preferred feedstock to the cesium chemicals industry, including the nearby Tantalum Mining Corporation of Canada Ltd.'s cesium chemical plant. The next phase of drilling at the Lucy Pegmatite will be designed to test the distribution of pollucite within this specific target area.

Eagle Gabbro Exploration Highlights

• New airborne EM surveys completed in Q4 2024 have defined numerous, strong EM anomalies at the Mayville project that could reflect massive magmatic sulfide accumulations.

Dr. Dave Peck, P.Geo., Grid's Vice President of Exploration, stated "The new drill results confirm the mineralized nature at the Eagle gabbro, which is located ~10 km from Grid's existing 32 Mt indicated open-pit, copper-rich Mayville deposit². We are now looking at a ~20 km long mineralized mafic-ultramafic complex having demonstrated potential to expand on the Mayville resource. Moreover, the results from the recent, deep penetrating EM surveys have highlighted the potential for high-grade massive sulfide deposits on the Property. In the future, adding new high-grade resources to the known near-surface disseminated sulfide deposits is seen as the best path forward for this project."

Figure 1. Location of the 1) Mayville Deposit (yellow); 2) the top-ranked and untested conductor anomalies potentially associated with massive Cu-Ni sulfide mineralization at the Mayville project; and 3) the Eagle gabbro area. The map shows the interpreted limits of the Mayville-Eagle Complex (black outline) on a tilt derivative total magnetic intensity background image.

¹ The Mayville deposit is located ~10 km to the west of the Eagle gabbro and is estimated to contain 32.0 million tonnes of indicated resources averaging 0.40% Cu and 0.16% Ni (see the Company's May 6, 2024 news release for details)

² Cu Eq is the copper equivalent grade, calculated as follows: CuEq (%) = Cu% + ((Ni% x NiR x NiP) + (Co% x CoR x CoP) + (Pt g/t x PtR x PtP) + (Pd g/t x PdR x PdP) + (Au g/t x AuR x AuP))/(CuR x CuP) where R = metal recovery and P = metal price. The following fixed metallurgical recoveries were assumed, guided by metallurgical test results reported by Micon International in the current Technical Report for the property (June 2024 - see Company website for details): Cu - 85%; Ni and Co - 60%; Pd, Pt and Au - 70%. The following long-term metal prices in US dollar amounts were assumed: Cu - $4.00/lb; Ni - $9.00/lb; Co - $22.50/lb; Pd - $1,100/oz; Pt - $1,100/oz; Au - $2,200/oz.

³ The New Manitoba deposit has a historical resource estimate of 2.0 million short tons averaging 0.75% Cu and 0.33% Ni (Manitoba Mineral Inventory Card #217). The Company has not been able to verify the historical estimate as relevant and the historical estimate should not be relied on.

Figure 2. Hole locations for the Q4 2024 Eagle gabbro drilling program. The map shows the interpreted position of the 4 km-long Eagle gabbro (black dotted outline), which is the host to the New Manitoba deposit, on a tilt derivative total magnetic intensity background image. Magnetic high anomalies are indicated by warmer colours.

Drill Program and Detailed Results
A total of 4,132 metres were drilled in 25 holes during the Q4 2024 drill program at the Eagle gabbro (Figure 1). Three discrete targets were tested along a ~2 km segment of the Eagle gabbro. These included 11 holes targeting the historical New Manitoba deposit in the south (holes EAG24-01 to 11); 4 holes at a linear magnetic anomaly located ~500m north of the New Manitoba deposit ('E15' target; holes EAG24-13, 14, 16 and 17); and 6 holes at a previously untested disseminated sulfide occurrence at the Acme target area, located 1.2 km north of E15 (holes EAG24-20-25). Two holes were drilled on a conductor (EAG24-016) and a flanking magnetic anomaly (EAG24-17) located ~1 km east of the Eagle gabbro. One hole tested an unmapped magnetic anomaly located along the east side of the Eagle gabbro (EAG24-12). One hole was abandoned (EAG24-15).

All but one of the holes that intersected the Eagle gabbro encountered a steeply-dipping, several metre- to ~40-metre-thick interval of Cu-rich disseminated sulfide mineralization (the 'Eagle Cu Zone'). The average grades and metal tenors for the Eagle Cu Zone closely resemble those characterizing the Mayville deposit. Most of these new drill intersections are shallow (<100 metres vertical depth) and the disseminated sulfide mineralization remains open at depth and along strike across the 4 km extent of the Eagle gabbro. As previously reported, 3 holes at the New Manitoba target also encountered a narrow (<1 metre thick) nickel-rich semi-massive sulfide interval in the approximate middle portion of the Eagle Cu Zone, with nickel grades of up to 2.37%. Table 1 provides highlights for all of the 2024 drill holes that intersected the Eagle gabbro.

Table 1. Highlights for the Q4 2024 Eagle drilling program. The true thickness of the drill intersections reported here are estimated to represent 40 - 90% of the interval lengths. Results for drill holes EAG24-01 to 06 were previously reported (see the Company's Dec. 2, 2024 news release).