About this episode

Adrian O’Brien discusses the expansion of copper mineralization at the Dumbwa deposit and the company's strategic drilling approach.

Midnight Sun Mining VP Adrian O’Brien explains how the company has expanded its near-surface copper mineralization at the Dumbwa basement dome-hosted sulfide copper deposit in Zambia’s Domes region to 6.7 km strike within an 11.5 km phase-one program and a broader 20 km geochemical target. O’Brien explains the deposit’s close geological analogy to Barrick’s nearby Lumwana deposit, outlines a systematic “drill like a major” fence-drilling method with 50 m hole spacing and 100–200 m fence spacing enabled by low Zambian drill costs, and says the approach is designed to define edges, grade variability, and stacked, relatively flat mineralized lenses from surface to ~200 m depth. He discusses expectations for a first MRE in the fall, continued drill result releases, planned magnetics and metallurgical testing, reasons for share-price weakness despite operational progress, and ongoing but undisclosed monetization talks for the Kazhiba oxide resource. 00:00 Intro 00:28 Dumbwa Discovery Update 01:15 Basement Dome Copper Explained 04:10 Majors-Style Drill Strategy 11:16 Data Modeling And MRE 12:33 Deposit Scale & Geometry 14:08 Share Price Disconnect 19:19 Kazhiba Oxide Monetization 20:32…

People in this episode

Host: Bill Powers

Guest: Adrian O’Brien

Topics covered

• copper mineralization
• mining strategy
• geological analysis
• drilling techniques
• market analysis
• resource monetization

Keywords

• Dumbwa deposit
• copper
• mineralization
• drilling strategy
• Zambia
• Kazhiba
• MRE
• geochemical target

Mentioned in this episode

Organizations: Midnight Sun Mining, Barrick, Lumwana

Places: Zambia, Domes region, Kazhiba

More episodes of Mining Stock Education

• Mark Zaret: 46-Bagger, Multi-Decade Winners, Ongoing Bets, & Buying Illiquidity When Nobody Cares · July 20, 2026 · 33 min
• “You Can Buy $CTGO at Just Three Times Next Year’s Free Cash Flow” – Contango’s Shawn Khunkhun · July 17, 2026 · 22 min
• Sulfide vs. Oxide Deposits: What Every Copper & Gold Investor Must Know with Dr. Rob Stevens · July 15, 2026 · 29 min
• David Lotan Shows You How to Make Junior Mining Millions: Aurion & Fox River Buyouts Explained · July 8, 2026 · 55 min
• Planalto Copper-Gold Deposit’s Pre-Feasibility Pathway with Lara Exploration CEO Simon Ingram · July 6, 2026 · 15 min
• Navigating the Sell-Off — Watch Lists, Capitulation, & New Trends with Bill Powers & Brian Leni · July 2, 2026 · 1h 2m

Explore listener stats, chart rankings, contacts and more on the Mining Stock Education podcast page.