Tertiary Minerals plc announced the commencement of exploration operations at its Mupala Copper Project in the highly prospective Kabompo Dome of the Northwestern Province, Zambia. Detailed Information: The Mupala Exploration Licence 32139-HQ-LEL covers 41.2 km2 and is located in the Kabompo Dome region in the Northwest Province of Zambia. It is held 100% by the Company's 96% owned subsidiary, Tertiary Minerals (Zambia) Limited.

The Licence is underlain by the prospective Lower Roan Subgroup and lies directly adjacent to the Anglo American/Arc Minerals joint venture area where Anglo American has the right to earn a 70% interest through expenditure of $88.5 million. Approximately 12 km to the east lies the Company's Mukai Copper Project and First Quantum Minerals' Trident Project which is host to the Enterprise Copper and Sentinel Nickel Mines. Existing geological maps indicate that the licence covers some 16 km strike length of the main copper mineralised horizon in Zambia (Lower Roan Subgroup).

A review of historical exploration data provides an overview of the exploration history, albeit incomplete. Mwinilunga Mines Ltd. conducted soil and stream sediment sampling in the area in the 1960s and identified a number of copper-in-soil anomalies which provide an initial focus for the Company's exploration of the Licence area. The Company received approval of the Project Environmental Project Brief (?EPB?) from the Zambia Environmental Management Agency in May 2024 and has completed all other exploration prerequisites including pegging of the Licence area and receipt of a Letter of Consent from the Sailunga Chiefdom.

Geological and exploration contractor, Geo-Junction Consulting Limited, has now been engaged and soil sampling will begin this week. The initial soil sampling programme is designed to collect 460 samples on a 300x300m offset grid with in-field sample preparation and real-time reporting of pXRF instrument analytical results to allow for immediate infill grid sampling of areas of anomalous soil geochemistry.