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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."

On 27 March 2026, the Parliament of Sierra Leone ratified the Extractive Industries Fiscal Stabilisation Agreement for Large-Scale Mining between the Government of Sierra Leone and Leone Afric Metals (SL) Limited, covering the Kalangba lithium deposit (80.4 sq km, Ngowahun Chiefdom, Bombali District, Northern Province; spodumene/lepidolite pegmatites, ~25 Mt at ~1% Li). The agreement, dated 16 March 2026 and presented to Parliament by Finance Minister Sheku Ahmed Fantamadi Bangura, locks in fiscal terms for the 13-year mining period (25-year project horizon) against future royalty or tax changes, and commits Leone Afric Metals to a total investment of $250–309 million, with mining operations expected to commence in early 2027 and projected revenue of ~$200 million and 1,000+ direct jobs. Under Sierra Leone's Mines and Minerals Development Act 2022, fiscal stabilisation agreements with parliamentary ratification create binding investor-state obligations that constrain the government's future fiscal discretion over the project's life.

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).