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The Government of Sierra Leone officially launched the National Strategy for Critical Minerals 2026-2031 on 20 May 2026 at Sierra Leone Mining Week (Freetown International Conference Centre), with Vice President Dr Mohamed Juldeh Jalloh delivering the keynote address alongside Minister of Mines Julius Daniel Mattai. The strategy commits to attracting USD 2.5 billion in exploration and mining investment, establishing 3-5 domestic mineral-processing plants, and achieving USD 1.5 billion in annual value-added mineral exports by 2031 -- up from a current raw-mineral export base of approximately USD 1.3 billion. Scope covers lithium, graphite, bauxite, cobalt, coltan, rutile, diamonds, iron ore, and rare-earth elements, and frames the national minerals agenda under the theme "Responsible Mining, Value Multiplication and Shared Prosperity."

Sierra Leone's National Minerals Agency gazetted the Mines and Minerals Development Regulations 2023 (Statutory Instrument No. 9 of 2023) in May 2023 as the primary implementing instrument for the Mines and Minerals Development Act 2022 (Act 16). The Regulations repeal and replace the 2009 Regulations, establishing operational frameworks across five licence categories. Key provisions include a mandatory 10% non-dilutable free carried interest for the state in large-scale licences, an option for the state to acquire up to 35% additional equity on negotiated terms, mandatory community development agreements (minimum 1% of gross revenue), and environmental impact assessment and environmental bond requirements for all categories.

Sierra Leone's Parliament enacted Act No. 22 of 2023, establishing the Sierra Leone Mines and Minerals Development and Management Corporation (SLMMDMC) as a state body corporate mandated to carry out minerals and mining development, management, and related activities on behalf of the Republic. The Corporation operates through government-approved "project companies" (public-private vehicles) constituted under the parent Mines and Minerals Development Act 2022, with its Board responsible to the Minister for Mines. The Act enables Parliament-approved allocation of specific mineral assets to the Corporation for development, creating the institutional architecture for systematic state participation across Sierra Leone's strategic mineral sector — including rutile, ilmenite, bauxite, diamonds, iron ore, and critical minerals identified in subsequent national strategy instruments. The Act entered into force on 15 June 2023 and is the implementing parent for the Allocated Minerals Regulations (SI No. 11 of 2024).

Sierra Leone's Parliament enacted Act No. 16 of 2022, a landmark overhaul of the country's foundational mining legal framework replacing the Mines and Minerals Act 2009. The Act establishes a reformed licensing architecture (exploration → large-scale mining licence pipeline), enhanced royalty and compulsory state-participation provisions for large-scale licences, and strengthened local-content, artisanal-and-small-scale mining (ASM), and beneficial-ownership- disclosure obligations. The National Minerals Agency (NMA) is empowered as the primary regulatory body; the Act received presidential assent on 21 March 2023 and commenced 12 May 2023, forming the statutory parent for all subsequent Sierra Leone minerals legislation including the SLMMDMC Act (Act No. 22 of 2023) and the 2026-2031 Critical Minerals Strategy.