The Republic of Sierra Leone has entered a new era of resource governance. On May 12, 2023, the West African nation enacted the Mines and Minerals Development Act, 2022—the most comprehensive overhaul of its mining legislation in over a decade. The new law replaces the 2009 framework and introduces a modernized system designed to strengthen state oversight, ensure community benefits, and attract responsible investment across its diamond, gold, bauxite, rutile, and iron ore sectors.
A Modern Legal Framework Anchored in Accountability
Sierra Leone’s mining industry has long been central to its economy, contributing nearly 60% of export earnings and employing tens of thousands. Yet outdated regulations and opaque governance often discouraged major investors. The Mining Act, 2022 and accompanying Mines and Minerals Development Regulations, 2023 aim to reverse that trend by aligning national laws with global standards.
The Act sits within a broader legislative ecosystem that includes the National Minerals Agency Act, 2012, Extractive Industries Revenue Act, 2018, Sierra Leone Mines and Minerals Development and Management Corporation Act, 2023, and Environment Protection (Mines and Minerals) Regulations, 2013. Collectively, these instruments define how licences are granted, revenues collected, the state participates in projects, and environmental and community safeguards are enforced.
This layered approach mirrors the legislative modernization seen in Ghana, Namibia, and Tanzania—where governments are reclaiming greater control over natural resources without alienating private investors.
Licence Structure: From Reconnaissance to Production
The new framework introduces a clear hierarchy of mineral rights, from early-stage reconnaissance to full-scale production.
- Reconnaissance Licence: Available only to corporate entities for up to one year, covering a maximum of 10,000 km². Holders gain non-exclusive survey and sampling rights.
- Exploration Licence: Grants exclusive rights to explore up to 125 km² for up to three years, renewable twice for two-year terms. Holders can drill, excavate, and establish camps.
- Small-Scale Mining Licence: Reserved for Sierra Leonean-majority entities or cooperatives with at least 30% local ownership, covering 50–200 hectares for four-year terms.
- Large-Scale Mining Licence: Applies to projects exceeding 200 hectares or involving deeper extraction, valid for up to 25 years with renewals in 15-year increments.
The differentiation between small- and large-scale operations underscores Sierra Leone’s strategy to balance foreign capital inflows with domestic participation—a model that has gained traction across sub-Saharan Africa.
State Participation and Equity Requirements
Perhaps the most consequential reform lies in mandatory state participation. The government now holds a 10% non-dilutable free carried interest in all large-scale mining projects, with an option to acquire up to an additional 35% equity stake through negotiation.
This move aligns Sierra Leone with a continental trend toward “resource nationalism with partnership”—a policy balance adopted by countries like Botswana and Zambia to capture more value from raw material exports while maintaining investor confidence.
Transferability and Compliance
Under the new Act, exploration, small-scale, and large-scale licences can be transferred, pledged, or mortgaged—subject to ministerial approval and eligibility checks. However, reconnaissance, artisanal, dealer, and exporter licences remain non-transferable.
Licence holders must comply with extensive obligations, including royalty payments, rent taxes, annual fees, and social contributions. Environmental impact assessments are mandatory prior to major operations, reinforcing Sierra Leone’s commitment to sustainability and community accountability.
Skillings Analysis
Sierra Leone’s legislative pivot is both strategic and pragmatic.
- On investor confidence: The clarity of licence tenure and transferability rules is likely to reassure mid-tier miners and exploration companies seeking West African exposure.
- On national value capture: The state’s 10% free carry—coupled with the right to scale up to 35%—cements government presence without scaring off capital.
- On sustainability: By embedding community development and rehabilitation clauses, Sierra Leone signals alignment with ESG frameworks increasingly demanded by global investors.
Outlook: Toward a More Predictable Investment Climate
The Mines and Minerals Development Act, 2022 represents more than legislative housekeeping—it is Sierra Leone’s bid to transform mineral wealth into sustainable growth. With global demand rising for battery metals and responsibly sourced minerals, the Act positions the country as a credible destination for ethical investment.
As the first full year of implementation unfolds through 2024–2025, industry watchers will be keen to see how enforcement, transparency, and local participation evolve. If effectively executed, Sierra Leone could re-emerge as one of West Africa’s most stable mining jurisdictions.


