In short: His company (CEO talking his book): Dumbwa, a 20 km soil anomaly with copper at surface, fence-drilled over 13 months (~75k m, heading to ~100k m, five rigs) into an 11–12 km system — "the discovery is real." Phase 2 delineates higher-grade zones toward ~250 Mt at 0.3–0.35% Cu, the threshold for a sale; funded (~$40M raised) plus a planned sale of the Kazhiba satellite (2.3 Mt at 1.41% Cu).
Midnight Sun is a small exploration company in northern Zambia, in the same copper-rich district as some of the world's biggest mines. Its Dumbwa property has a 20 km stretch where copper shows up in the soil. In the past 13 months it drilled about 75,000–100,000 metres of holes on a regular grid and found copper along about 11–12 km so far — which the CEO says proves a large copper system exists.
An explorer usually doesn't build a mine itself; it tries to prove enough copper to attract a buyer. O’Brien's target is roughly 250 million tonnes grading 0.3–0.35% copper, near the surface where it's cheap to dig. The next phase focuses drilling on the richer zones. The context helps: the US is funding a railway to carry Zambian copper west to the Atlantic, China is fixing one east to the Indian Ocean, and every big miner is in the area looking for new deposits. This is the CEO describing his own company, and exploration results can disappoint.
15:55this thing. — Okay. — But the discovery is real. Dumbwa is a big system. Now we get to find out what it really is. — So phase one drilling was just over a year, right? — Yeah, it'll be just over a year. We started August of last year and we'll finish before September 30th. — Okay, good. 13 months.
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