Skip to navigationSkip to main contentSkip to right columnADVERTISEMENTProactiveThu, June 25, 2026 at 11:44 AM GMT+2Tertiary Minerals (AIM:TYM) managing director Richard Belcher joined Proactive's Stephen Gunnion to discuss the company's largest drilling programme in Zambia to date and next steps at its Mushima North project.Belcher explained that the 4,000-metre campaign aims to support delineation of a formal mineral resource at the Target A1 prospect by year-end, while also testing extensions to known mineralisation and nearby targets that could add further tonnes and ounces. The existing exploration target already stands at up to 58 million ounces of silver equivalent, with Belcher noting substantial scope for growth across the wider project area.He also flagged the potential for deeper sulphide mineralisation beneath the near-surface oxide copper-silver occurrences. "It could be potentially a game changer for the company in that respect, targeting the deeper sulfide," he said, while stressing the existing oxide mineralisation is already significant enough to support profitable mining.Belcher pointed to Mushima North's proximity to the historic Kalengwa copper-silver mine, now being redeveloped, as evidence that the district is becoming an increasingly attractive exploration and mining hub.For more Proactive interviews and market insights, visit the Proactive YouTube channel. Don't forget to like this video, subscribe to the channel and enable notifications so you never miss future content.#TertiaryMinerals #RichardBelcher #ZambiaMining #CopperMining #SilverMining #CopperExploration #MineralResource #MiningStocks #JuniorMining #MushimaNorth #CriticalMinerals #NaturalResources #ResourceInvesting #MiningNews #ProactiveInvestorsTerms and Privacy PolicyEU DSA contactPrivacy & Cookie SettingsMore Info