Setting the Global Standard for Natural Rutile.
The world’s leading natural rutile producer positioned to significantly extend its mine life and reduce costs through development of Sembehun
Our Products.
World-class mineral sands products serving diverse industries globally
Standard-Grade Rutile (SGR)
high-grade product consumed primarily in the manufacture of TiO₂ pigment and titanium sponge, accounts for...
Zircon-in-Concentrate (ZiC)
16-22% zircon mineral in ZIC further reprocessed to increase the Zircon content to meet industrial...
High-Grade Chloride Ilmenite
Suitable for direct chlorination into TiO₂ and transformation into titanium slag.
Industrial-Grade Rutile (IGR)
Well suited to high-grade flux core wire welding applications due to its high packing density...
Standard-Grade Rutile (SGR)
Titanium dioxide feedstock for pigment production
Industrial-Grade Rutile (IGR)
Premium quality rutile for industrial applications
Zircon-in-Concentrate (ZiC)
High-grade zircon for ceramics and refractories
Ilmenite
Source of titanium used for the production of metal parts for various industries
Our Operations.
Strategic mining operations delivering sustainable value
- Location:
- Capacity
- Status:
- Moyamba District, Sierra Leone
- 175,000 tonnes per annum
- In Development
- Location:
- Capacity
- Status:
- Bonthe District, Sierra Leone
- 120,000 tonnes per annum
- In Production
Our Leadership
Experienced leadership driving sustainable growth and innovation
Kobi Walker
Chairman, Non-Executive Director
Kobi Walker is a highly experienced executive with over three decades of leadership across multiple industries, including finance, energy, insurance, transport, and governance.
Kobi Walker
Chairman, Non-Executive Director
Kobi Walker is a highly experienced executive with over three decades of leadership across multiple industries, including finance, energy, insurance, transport, and governance. He has held senior board and executive roles across the UK, Europe, and West Africa, bringing deep expertise in strategy, general management, sales, and corporate planning. Mr. Walker currently serves as Chairman and Director of several leading organisations and has played an active role in public and private sector governance bodies. His extensive international exposure and multi-sector leadership experience support strong corporate oversight and strategic direction at Sierra Rutile Limited.Education
- MBA, Harvard Business School
- BSc Mining Engineering, Colorado School of Mines
Professional Experience
- Former CEO, Global Mining Corp (2010-2020)
- Executive VP Operations, MegaMining Ltd (2005-2010)
- Senior Mining Engineer, ResourceCo (1995-2005)
Connect With Kobi
Lima Sufian-Kargbo
Managing Director & Chief Executive Officer
Lima Sufian-Kargbo has over 25 years of progressive experience and is a seasoned executive adept at planning and directing all aspects of operations within the engineering and mining industries, across both the United Kingdom and Sierra Leone. Lima Sufian-Kargbo
Managing Director & Chief Executive Officer
Lima Sufian-Kargbo has over 25 years of progressive experience and is a seasoned executive adept at planning and directing all aspects of operations within the engineering and mining industries, across both the United Kingdom and Sierra Leone.He has consistently held leadership roles within corporate management teams, demonstrating a strong track record in planning and executing complex corporate and project-level objectives, including successful delivery of multi-million-dollar initiatives.
His expertise encompasses proficient budget management and strategic application of project tools to achieve goals. Having joined Sierra Rutile Limited in October 2024 to lead its strategic transition to Leonoil Company Limited.
He was appointed substantive Chief Executive Officer in April 2025. In this capacity, he has led a comprehensive restructuring of the organisation, strengthening its operational and financial foundations.
He successfully presided over the capital raise for the Sembehun project, notably driving a strategic pivot to acquire a pre-owned processing plant from Base Titanium—reducing projected capital expenditure from $405 million to $120 million and shortening the development timeline from 26 months to 18 months.
Lima continues to steer the company through challenging market headwinds, further impacted by global geopolitical tensions, with a focus on resilience, value creation, and long-term sustainability.
Connect With Lima
Ibrahim Cole
Executive Director
Ibrahim Cole is an experienced executive with over 20 years of expertise in project engineering, project management, strategy, and general management. Ibrahim Cole
Executive Director
Ibrahim Cole is an experienced executive with over 20 years of expertise in project engineering, project management, strategy, and general management. His career spans major infrastructure and operational leadership roles in Sierra Leone and the United States. He has successfully progressed from engineering roles into senior executive leadership, serving as Managing Director for several years. Mr. Cole holds an MBA in Management and a Bachelor’s degree in Civil Engineering, bringing strong technical and business leadership to the Board.Connect With Ibrahim
About SRL.
Sierra Rutile’s principal activities are in the operations of a multi-deposit mineral sands mining operation in southern Sierra Leone and is the leading producer of natural rutile in the world.
Rutile is the highest-grade naturally occurring TiO2 feedstock used in the manufacture of pigment used in paints, laminates, plastic pipes and packaging, inks, clothing, sunscreen, toothpaste and in the cosmetic industry. Rutile is also used as welding electrode as well as being used to manufacture titanium metal which has the highest strength to weight ratio of all commercial metals and is used across a diverse range of applications including aeronautics, medical implants, defence and sporting goods.
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