Diablo Resources Advances Exploration at Phoenix Copper Project in Utah

Key Highlights:

• Completed 42 stream sediment samples across the Stateline Claim Block, defining four new prospective structural targets.
• At the Fair Dinkum Prospect, rock chip sampling yielded a robust average of 1.12% Cu, with maximum readings of 2.76% Cu and 92 g/t Ag.
• Drill permit application submitted to the U.S. Bureau of Land Management for the Fair Dinkum Prospect.
• Full assay results from drilling and stream sampling anticipated within 3–6 weeks.
   

Cementing a Strategic Presence in a Proven Copper District

Diablo Resources Ltd (ASX: DBO) has provided a positive progress update from its wholly owned Phoenix Copper Project in Utah, strengthening its foothold in one of America’s established copper districts.

Reverse circulation drilling is actively progressing at the Trenton and Philadelphia Prospects, positioned along strike from the Lisbon Valley Copper Mine—a long-standing operation that has historically produced more than 276 million pounds of copper. This proximity underscores the project’s strategic setting and enhances confidence in its exploration potential.

Stream Sampling and Surface Results Signal Further Potential

The recent regional program captured 42 stream sediment samples across the Stateline Claim Block, identifying four priority structural zones ripe for follow-up. At the Fair Dinkum Prospect, detailed rock sampling confirmed significant copper-silver mineralisation, with average grades at 1.12% Cu and standout specimens hitting 2.76% Cu and 92 g/t Ag. A submission for drilling permits has already been lodged, signaling rapid progression toward testing this highly prospective zone at depth.

CEO’s Insight on Exploration Strategy

Chief Executive Officer Lyle Thorne framed the update within the broader push to reinvigorate U.S. critical mineral supply chains.

Source: DBO ASX Announcement 

The company’s message aligns with U.S. policies accelerating permitting for critical mineral exploration—especially copper—in key districts like Lisbon Valley, classified as a FAST-41 Transparency Project thanks to its strategic importance and efficiency in permitting.

Expanding Exploration Footprint

The company has also completed a 42-sample stream sediment program across its Stateline Claim Block, a district-scale initiative designed to highlight copper-bearing structures and refine drill targets. From this survey, four priority structural zones have already been identified for immediate follow-up exploration.

At the Fair Dinkum Prospect, surface reconnaissance and rock chip sampling have delivered strong early results. Thirteen grab samples averaged 1.12% copper, with peaks up to 2.76% Cu and 92 g/t silver. A drill permit application has already been lodged with the U.S. Bureau of Land Management (BLM), demonstrating Diablo’s intent to fast-track this high-priority target into the next phase of drilling.

U.S. Copper Sector Backdrop

Global copper demand remains strong, fueled by continued investment in electrification, renewable infrastructure, and industrial transformation. Analysts forecast supply challenges ahead, raising the stakes for new sources of copper. In this light, the U.S. government’s prioritization of domestic copper exploration, embodied in faster approvals, offers companies like Diablo a prime opportunity.

Investor Eye: Trading Reaction & Market Metrics

Reflecting excitement from this exploration update, Diablo’s shares rose 7.14% intraday, trading at A$0.03, with 4.56 million shares traded. The company commands a market capitalization of A$5.04 million, supported by 168.12 million shares outstanding. Over the past twelve months, the share price has doubled—a clear signal that the market is rewarding progress.

Near-Term Outlook & Strategic Summary

Crucially, assay results from both underground drilling and surface sampling are expected in 3–6 weeks. If results confirm the early promise in both copper and silver grading, Diablo may solidify its position as a noteworthy U.S.-focused explorer in a high-demand commodities cycle.

With drilling proceeding, permits in place, and a compelling project footprint, Diablo Resources is positioning itself not just for discovery, but for critical-commodity relevance in the shifting global supply map.