Company
One operator, the
Mammut has explored, built, run and traded across African nations — holding the full mining value chain so quality and traceability survive the journey from drill core to cargo.
Who we are
A legacy of excellence, end to end.
Mammut Holdings International has long been at the forefront of African mining — pairing sustainable practice with technical depth across exploration, development, processing and trade.
From geophysical survey to Grade-A cathode, we provide comprehensive services that drive success for our partners while contributing to the economic development of the regions where we operate.
Principles
The values under every decision.
Excellence
The highest technical and operational standards from drill core to cargo — measured, not asserted.
Integrity
Honest, transparent and ethical practice. One assay record follows the ore the whole way.
Sustainability
Environmental responsibility and long-term thinking built into the mine plan, not bolted on.
Innovation
Continuous improvement and the technology to prove ground others walk over.
Our journey
From one concession to a corridor.
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Founded in the Copperbelt
A single concession in the DRC and a conviction that mining value leaks at the seams between contractors.
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First integrated mine
Exploration, development and processing held under one roof for the first time — concept to first ore.
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Trading desk established
Refined metal moved from our own pits to global buyers, fully documented and traceable.
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A multi-nation corridor
Operations spanning the DRC, Zambia, Zimbabwe, Tanzania, Uganda and Mozambique.
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Battery-metals expansion
Cobalt hydroxide and hard-rock lithium scoped end to end for the energy transition.
Where we work
Rooted across the continent.
Leadership
The people who sign the assays.
Dr. Amara Okonkwo
Chief Executive Officer
James Mutale
Chief Operating Officer
Sarah Chik, P.Geo.
Head of Exploration
Thomas Banda
Director, Trading
Explore
Go deeper.
Our Story
Origins, mission, and the long view that built our African corridor.
Leadership
The geologists, engineers and traders who sign the assays.
Geographic Presence
Operations and offices across African countries.
Corporate Responsibility
Environmental stewardship and the communities we work in.
Recognition
Recognised for the work.
Africa Mining Excellence Award
Responsible Producer of the Year
Safety Leadership Award
Best Local-Content Programme
Standards
Certified to the standards that matter
Hover or select a badge to see how it applies to our work.
ISO 9001
Quality management
Systems and processes that keep assay, study and delivery work consistent and traceable from scope to sign-off.
ISO 14001
Environmental management
Environmental controls embedded from exploration through rehabilitation, not treated as a bolt-on.
ISO 45001
Occupational health & safety
A structured approach to hazard control, near-miss reporting and the zero-harm culture we run on every site.
JORC
Australasian Code
Public reporting of exploration results, mineral resources and ore reserves — the standard our resource statements work to.
NI 43-101
Canadian Disclosure Standard
Technical reports and disclosure for mineral projects, supporting transparent, bankable documentation.
LME Grade-A
Copper cathode
Copper cathode that meets the London Metal Exchange's strict 99.99% purity standard, accepted on registered exchanges.
LBMA
Good Delivery
Gold doré and refined bars produced to the London Bullion Market Association's 995 fineness criteria.
RMI / OECD
Responsible minerals
Due-diligence aligned with the Responsible Minerals Initiative and OECD guidance, ensuring chain-of-custody integrity.
Newsroom
Latest from the field
Production milestones, resource updates and ESG disclosures from across our operations.
Zambia SX-EW plant reaches design cathode output
The Copperbelt processing facility is now producing Grade-A copper cathode at nameplate capacity, with real-time grade control wired to the assay lab.
Read moreMaiden JORC resource announced at DRC copper project
Drilling and geophysics have defined a 2.1 Mt Measured & Indicated resource in the Kolwezi copper belt, with further targets being tested.
Read moreMammut publishes 2025 Sustainability Report
The report covers TRIFR performance, community investment, water recycling and the 2030 emissions targets across all operations.
Read moreCareers
Build a career on solid ground.
From the drill pad to the trading desk, our teams work across African nations — geologists, engineers, metallurgists and traders who share the same standard from core to cargo.
Want the full picture?
Talk to the team about exploration, development, processing, or the trading desk.
Trusted by
Partners, buyers & accreditations
The network that moves metal from pit to port to market.
Stay close to the corridor.
Production updates, project milestones and market notes — a few times a year, no noise.