Terra Metals Inc. and Lunda Resources Confirm 96.5% Copper Recovery and Solar-Powered Green Production at Kalaba Project

CHARLOTTE, N.C. and LUSAKA, Zambia, June 09, 2025 (GLOBE NEWSWIRE) -- Terra Metals Inc., in partnership with its Zambian subsidiary Lunda Resources Ltd., is proud to announce a major metallurgical breakthrough at the Kalaba Copper Project in Northwestern Zambia. Independent testing conducted by Dr. Yotamu Hara of YCS Sustainable Solutions Ltd. confirms flotation recoveries exceeding 96.5%, with concentrate grades of 26.91% Cu—a remarkable result for oxide-dominant ore.

Technical Highlights:

• 96.52% cumulative copper recovery using flotation (see p. 30 of Hara Report), with sulphide concentrates at 26.91% Cu and oxide concentrates at 4.31% Cu.

• Flotation made possible through advanced chemistry, particularly the use of CMC depressants to manage high talc content (up to 54%), previously considered a major processing barrier.

• The ore’s upgrade potential allows for low-cost leaching via solvent extraction, positioning Kalaba among Africa’s lowest-cost green copper producers.

• An NI 43-101-compliant resource estimate is expected to be released before the end of July 2025.

A Model for Green Critical Minerals:

• Full environmental clearance has been granted by ZEMA (Zambia Environmental Management Agency).

• A 5 MW solar energy facility has been completed and approved, with plans to expand to 100 MW—enabling carbon-neutral production of copper and cobalt.

• Terra Metals and its partners will become Zambia’s first large-scale producers of green critical metals, powered almost entirely by solar energy.

Traditional & Community Support:

Terra Metals acknowledges the tremendous support of His Royal Highness Senior Chief Sailunga and Chief Ntambu of the Lunda people. Their leadership and collaboration have played a vital role in advancing the Kalaba Project with integrity and respect for local communities.

Regional Upside:

In addition to Kalaba, the company holds a large-scale exploration license through Central Africa Renewable Energy, covering a prospective copper-cobalt zone immediately south of Ivanhoe’s world-class Kamoa-Kakula Mine in the DRC Copperbelt.

Chairman’s Statement:

“This isn’t just a technical success—it’s a declaration that Zambia can lead in responsible, solar-powered production of the world’s most critical minerals. Kalaba is proof that innovation, sustainability, and community partnership can deliver real value.”— Mumena Mushinge, Chairman, Terra Metals Inc. and Lunda Resources.

Next Milestones:

• NI 43-101 Report expected before July 31, 2025

• 240TPH concentrator commissioning in September 2025

• Solar expansion to 100 MW

• Phase 2 exploration and geophysics at DRC-bordering tenement

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ABOUT TERRA METALS INC.

Terra Metals Inc. is a Delaware-based mineral development company focused on securing high-impact, ESG- compliant critical mineral assets across Africa for delivery to U.S. and allied markets.

MEDIA CONTACTS:Terra Metals Inc.Email: [email protected]Phone: +1 (980) 349-3883Website: www.terrametalsinc.com

Ongoing Construction of 240 TPH Flotation Plant at Kalaba Mine

A photo accompanying this announcement is available at: https://www.globenewswire.com/NewsRoom/AttachmentNg/aceb7522-0bc4-44b7-befb-dc98bdbd5160

Kalaba Project

Ongoing Construction of 240 TPH Flotation Plant at Kalaba Mine