VANCOUVER, BC — December 17, 2025 — Leads & Copy — GoldHaven Resources Corp. (CSE: GOH) (OTCQB: GHVNF) has completed its inaugural diamond drilling program at the Copeçal Gold Project in Brazil. The company reported that nine holes totaling 1,085.7 meters successfully tested two priority gold targets, with potential gold-bearing minerals intersected at the East Target. All drill core is now being logged and sampled for laboratory assay before year-end.
The program delivered GoldHaven’s first subsurface confirmation that surface gold readings connect to mineralization at depth. Hole COPE-PDH-004 intersected potential gold-bearing minerals across approximately 30 meters, prompting GoldHaven to drill follow-up hole COPE-PDH-009, which discovered bornite, a copper-rich mineral never before identified at Copeçal.
The presence of bornite is significant because it commonly appears in large-scale gold-copper systems and suggests GoldHaven may have intersected a substantial mineralized system with potential for both gold and copper mineralization.
“Intersecting sulphide mineralisation in Hole COPE-PDH-004 and subsequently in follow-up Hole COPE-PDH-009 at our East Target during a first-pass drilling program has provided valuable new geological insights,” said Rob Birmingham, CEO of GoldHaven Resources. “These results continue to enhance our understanding of the system as we integrate geological, structural, and geochemical data to refine targeting across both the East and West anomalies, as well as other prospective targets identified from our newly developed 3D diamond drilling dataset at Copeçal.”
At the West Target, drilling penetrated approximately 60 meters of weathered rock containing fractured zones with gold-bearing quartz, suggesting potential gold mineralization that could have been concentrated during the weathering process. Laboratory results from these zones will determine whether significant gold grades exist across the western target area, potentially opening a second mineralized corridor on the property.
The Copeçal Project sits within the prolific Juruena Gold Province, the same region hosting G-Mining’s Tocantinzinho deposit and multiple recent gold discoveries, underscoring the district-scale exploration potential.
Beyond Brazil, GoldHaven continues advancing its British Columbia portfolio, including recent expansion to its Magno Project in the Cassiar region and the Three Guardsmen Project, where recent surface sampling returned copper grades up to 15.85%.
GoldHaven now commands 123,900 hectares across two premier mining jurisdictions, with its first-ever diamond drilling campaign at Copeçal complete and laboratory results pending that could confirm gold grades, thickness, and continuity, potentially defining the scale and economic viability of the company’s Brazilian flagship project, all underpinned by a comprehensive 43-101 Technical Report.
Other industry developments include:
Omai Gold Mines Corp. (TSXV: OMG) (OTCQB: OMGGF) has announced high-grade drilling results from its Omai Gold Project in Guyana, with significant mineralization intersected in central Wenot returning 13.54 g/t gold over 13.3 meters and a new high-grade zone at East Wenot delivering 11.07 g/t gold over 14.7 meters including 34.31 g/t gold over 4.3 meters. A total of 79 holes totaling 35,300 meters have been completed in 2025, with 30 holes not included in the August 2025 Mineral Resource Estimate.
Fortuna Mining Corp. (NYSE: FSM) (TSX: FVI) has delivered expansion drilling results from Southern Arc at its Diamba Sud Gold Project in Senegal, with drill hole DSDD574 intersecting 1.7 g/t gold over 29.6 meters and a further 2.0 g/t gold over 20.0 meters. Infill drilling returned 6.8 g/t gold over 35.5 meters in hole DSDD555 and 13.54 g/t gold over 13.3 meters in hole 145W.
Coeur Mining, Inc. (NYSE: CDE) has completed its largest exploration campaign since 2012 at its Palmarejo gold-silver complex in Mexico, with 68,000 meters of diamond drilling across eleven drill rigs delivering exceptional results. Inaugural drilling at San Miguel returned some of the best assays ever recorded at Palmarejo, including 58.8 feet at 0.12 oz/t gold and 54.55 oz/t silver, while near-mine expansion drilling extended the Hidalgo, Libertad, and San Juan veins by a combined 950 meters.
Hecla Mining Company (NYSE: HL) has received federal permits for the 2026 Polaris Exploration Project in Nevada’s historic Aurora Mining District. The U.S. Forest Service issued the Finding of No Significant Impact on November 20, 2025, following a comprehensive environmental review.
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Source: GoldHaven Resources Corp.
