Our goal is to make Marampa Blue™ an internationally recognised, premium grade iron ore brand

“Our goal is to make Marampa Blue, an internationally recognised premium iron ore brand”, Craig Dean, Chairman, SL Mining Limited.

“Our goal is to make Marampa Blue, an internationally recognised premium iron ore brand”, Craig Dean, Chairman, SL Mining Limited.

“Our goal is to make Marampa Blue, an internationally recognised premium iron ore brand”, Craig Dean, Chairman, SL Mining Limited.

 

The Marampa Project

The Marampa Project involves beneficiation of iron ore from the Marampa concessions to a 65% Fe high grade iron ore concentrate. Estimated resources are approximately 1.7 billion tonnes of iron ore grading 32% Fe, with the geological potential for material increases. MML manages its own export logistics and transhipment at Freetown Harbour, giving it the ability to ship in all vessel classes to ports globally.

MML has reactivated and developed the Project, and has expanded the mining concession to include the Marampa South and North concessions. MML initially produced Marampa Blue™ at a rate of 2.0 Mtpa, increasing to 3.25 Mtpa during 2023. A further 3.75 Mtpa expansion was commissioned in 2025.

  • Production of high-grade iron ore concentrate, together with a strong focus on operating costs, will ensure a sustainable future for the mine and its stakeholders.
  • Build a resilient and long-life iron ore mine in Sierra Leone, expand throughput and integrate mining, processing, logistics and marketing.
  • As production increases and as MML optimises plant parameters and product specifications, MML will link orebody to mining for global markets.
  • Create in-country value by playing an integral role in fostering socio-economic
    development in Sierra Leone
  • Key sustainability focus: (i) build climate resilience (ii) focus on nature and biodiversity, including conservation and land remediation (iv) generate value for primary host communities through a series of social investments.
Brief History

Significant investments have been made by Gerald Group through SL Mining (2017 – 2019) to reconfigure and reactivate the Project from its historically distressed status. The Project, which was successfully commissioned to produce high-grade iron ore concentrate on 2 January 2019, was put back into ‘care & maintenance’ in September 2019 due to a dispute with the Government of Sierra Leone (“the Government”). In May 2021, as part of an amicable out-of-court settlement, Marampa Mines Limited (“MML”) was formed, wherein Gerald Group owns 90% interest and the Government, the remaining 10% interest.


Marampa 2.0

Rehabilitation and commissioning of the plant targeting a sustained output of 2Mtpa of Marampa Blue™ – a high-grade iron ore concentrate using the latest technology.


June 2021

Restart of shipments

July – Dec 2021

Rehabilitation of plant and operations

Dec 2021

Plant commissioning

Jan 2022

First shipment of Marampa 2.0

Marampa 3.25

MML is positioned to achieve an integrated process of exploration, mining, processing, logistics and marketing.
– Iron ore production and processing is set to expand to 3.25Mtpa by the end of 2022.
– Continued investment and improvements by MML / Gerald Group in the Marampa Project.
– Manpower and other HR and CSR programmes including contribution to a Community Development Fund.

(Note: Manpower includes permanent employees, expatriates, contractors and suppliers.)


Commissioned in 2025, the latest M 3.75 expansion represents not only MML’s largest investment, but a significant commitment to the future of our primary host communities and to Sierra Leone.


Marampa 3.75

– MML’s expands iron ore production capacity to 3.75M mtpa of high-grade iron ore concentrate.
– The expansion enables MML to process hard rock iron ore, extending the operational life-of-mine to 100 years.
– Introduces cutting-edge technology and environmental best practices.

(Note: Manpower includes permanent employees, expatriates, contractors and suppliers.)


The Marampa Project is targeting significant growth in iron ore production in Sierra Leone.
Updates will be provided as the project reaches new milestones.