Marampa Mines

What Marampa Mines does

Marampa Mines Limited (MML) is a Sierra Leone-registered, private iron ore miner — a subsidiary of diversified commodities trader Gerald Group, formed in May 2021 via an amicable settlement with the Government of Sierra Leone (Gerald Group 90%, Government 10%). The company operates a single-asset iron ore mine in the Port Loko District (Northern Province, Sierra Leone) and produces a branded, premium-grade iron ore concentrate called Marampa Blue™. The technology stack centers on mechanically beneficiating a 32% Fe mined resource via specially designed processing facilities — a SAG mill and Crusher — into a 65% Fe concentrate, positioned as one of the cleanest iron ore grades globally.

MML's business model is a single-stream commodity operation: it extracts iron ore, processes it on-site, and sells the resulting concentrate directly to global steel mills in Europe and China under a premium pricing posture justified by the 65% Fe specification. Export logistics and transshipment at Freetown Harbour's Delta 1 anchorage are managed in-house, with capability to ship in all vessel classes to global ports. Production capacity has scaled sequentially from 2.0 Mtpa (Marampa 2.0, first shipped January 2022) to 3.25 Mtpa (2023) to 3.75 Mtpa (M3.75 expansion commissioned January 2025), with stated potential to reach 5 Mtpa and an extended 100-year mine life supported by an estimated ~1.7 billion tonnes of resources at 32% Fe.

The company is non-diversified on the revenue side (one product, one commodity) but diversified across operational and ESG dimensions: a hybrid solar energy system targeting 20–30% emissions reductions; a workforce of 3,500+ direct and indirect contractors that is 97% Sierra Leonean and 30% women; and a Community Development Fund that has disbursed US$5M+ (and a Le38 billion tranche) to the Marampa and Maforki host chiefdoms over the past three years. Governance is provided by Gerald Group, with Gerald Group's Executive Chairman & CEO Craig Dean also serving as Marampa Mines' Chairman.

Name

Marampa Mines

Legal name

Marampa Mines Limited

Website

https://marampamines.com

Company type

Private

Founded year

2021

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Marampa Mines Limited is a Sierra Leone-based, private iron ore miner and Gerald Group subsidiary producing Marampa Blue™, a premium 65% Fe iron ore concentrate sold directly to steel mills in Europe and China.

Ownership category

akta.pro rank

Product category

Iron Ore Mining

NAICS

Iron Ore Mining (212210)

SIC

Metal Mining (1000)

akta.pro primary industry

Iron Ore Mining Operations (Open-Pit & Underground) (IMAKAAAC)

akta.pro secondary industries

Iron Ore Mine Development & Expansion (EPC, Construction, Commissioning) (IMAKAAAB), Iron Ore Pelletizing & Agglomeration (Pellets, Sinter Feed, Lump) (IMAKAAAE)

Keywords

• Iron ore mining
• Iron ore concentrate
• Mineral beneficiation
• Commodity export logistics
• Mining operations

Headquarters

HQ city

Freetown

HQ country

Sierra Leone

Offices3 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Operations, Personnel, Infrastructure, Supply Chain, Technology or R&D

Revenue model

1. Iron Ore Concentrate Sales: Production and sale of premium grade iron ore concentrate (Marampa Blue™) to global steel mills. The product commands premium prices due to its high 65% Fe content and clean grade quality.
2. Export Logistics: MML manages its own export logistics and transhipment at Freetown Harbour, shipping to ports globally in all vessel classes.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Marampa Mines Limited explores, develops, and produces premium-grade iron ore concentrate (branded Marampa Blue™) at 65% Fe grade from estimated resources of approximately 1.7 billion tonnes of 32% Fe iron ore in Sierra Leone's Port Loko District. The company operates specially designed SAG mill and Crusher processing facilities, with self-managed export logistics and transhipment at Freetown Harbour shipping to global steel mills.

Product overview

Marampa Mines Limited operates as an iron ore mining company producing a single primary product: Marampa Blue™. This is a premium-grade iron ore concentrate (65% Fe) that is beneficiated from estimated resources of approximately 1.7 billion tonnes grading 32% Fe. The company integrates mining, processing, infrastructure and export logistics operations, and has expanded production capacity through multiple phases (2.0 Mtpa, 3.25 Mtpa, and 3.75 Mtpa). The company is a subsidiary of Gerald Group and is developing its mine in Sierra Leone's Port Loko District.

Differentiator

Problem solved

Functional benefit

Brands

• Marampa Blue™: Premium-grade 65% Fe iron ore concentrate produced by Marampa Mines from the Marampa concessions in Sierra Leone. One of the cleanest grades of iron ore globally.

Products and services

• Marampa Blue™ Premium-Grade Iron Ore Concentrate Premium-grade iron ore concentrate (65% Fe) beneficiated from a 32% Fe mined resource using specially designed SAG mill and Crusher processing facilities. One of the cleanest grades of iron ore globally, marketed as enabling steel mills to produce greener steel for a cleaner environment. Sold directly to global steel manufacturers, primarily in Europe and China, with self-managed export logistics and transhipment at Freetown Harbour.

Quantifiable outcome

• 65% Fe grade iron ore concentrate achieved from 32% Fe mined resource
• +4 more outcomes

Named customers2 records

Segments2 records

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators11 records

Recent moves10 records

Expansion highlights5 records

Emerging players

• Mineral Resources Limited: Australian mining services and iron ore producer with a portfolio of mid-sized iron ore operations. Comparable to Marampa as a mid-tier iron ore producer focused on production growth and operational expansion, though operating in Australia rather than West Africa and with a broader mining services business.

Direct peers

• Ferrexpo: Ukrainian-focused iron ore pellet producer with a similar premium-product strategy. Comparable to Marampa as a mid-tier iron ore producer focused on higher-value processed products (pellets/concentrate) for European and global steel markets, although currently impacted by Ukraine war-related operational disruption.
• Anglo American (Kumba Iron Ore): Diversified miner with significant iron ore exposure through its Kumba Iron Ore subsidiary in South Africa. Comparable to Marampa as an established seaborne iron ore producer with similar high-grade product positioning, though operating at greater scale and as part of a diversified mining group.
• Champion Iron: Canadian-listed producer of high-grade iron ore concentrate (Bloom Lake) at 66%+ Fe grade — the closest scale-comparable peer to Marampa in terms of product grade (65% Fe), product type (concentrate rather than fines), and premium pricing strategy targeting green steelmakers.
• Rio Tinto: Major global iron ore producer (Pilbara operations) and identified in Marampa's own materials as one of the market-dominant players. Comparable as a large-scale iron ore miner exporting to Asia and Europe, though with far greater scale and diversification into aluminium, copper and lithium.
• BHP: Global mining major with iron ore as its flagship business (Pilbara). Named alongside Vale and Rio Tinto as a market-dominant incumbent in Marampa's own competitive context. Comparable as a large-scale seaborne iron ore supplier, but with a much broader diversified commodity portfolio.
• Fortescue Metals Group: Pure-play iron ore producer focused on the Pilbara with similar product focus on hematite concentrates and a strategic emphasis on green iron and decarbonization — directly aligned with Marampa's positioning around green steel and lower-emission processing.
• Vale S.A. One of the world's largest iron ore producers and the dominant seaborne supplier. Directly comparable to Marampa as a producer of high-grade iron ore products sold into global steel markets, although at materially larger scale and with broader product portfolio including pellets.

Broad incumbents

• ArcelorMittal: World's largest steelmaker with captive iron ore mining operations. Comparable to Marampa as an integrated iron ore/steel producer serving European steel markets, but operates as a vertically integrated incumbent across the full steel value chain rather than as a pure-play miner.

Regional players

• Sierra Rutile Limited: Mining company operating in Sierra Leone (rutile/titanium minerals), making it the closest regional operating peer to Marampa. Comparable on jurisdiction, regulatory environment, government-relationship dynamics, and ESG/community engagement requirements, although producing a different mineral (rutile rather than iron ore).

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/MarampaMines
• LinkedInlinkedin.com/company/marampa-mines-limited

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Marampa Mines