Societe Miniere de Boke (SMB): a bauxite operation in Guinea

Societe Miniere de Boke (SMB) is a mine producing bauxite in Guinea. The sources report 44,188,130 tonnes (basis not stated by the ministry) for CY2023; the basis is As reported by the Ministry of Mines and Geology of Guinea for the company labelled SMB. The sources do not give a whole-operation figure in bauxite that can be compared with world output, so no share is computed.

Who owns and operates it?

The sources used do not state the ownership split. Operator: not stated.

How much does it produce?

Reported output of Societe Miniere de Boke (SMB)
Period	Output	Basis	Where in the source
CY2023	44,188,130 tonnes (basis not stated by the ministry) Monthly figures from January to December 2023 are printed; the bulletin does not say whether tonnes are dry or wet.	As reported by the Ministry of Mines and Geology of Guinea for the company labelled SMB	Table I-1, 'Production mensuelle de la bauxite par societe miniere - Annee 2023 (tonnes)', row SMB, column Total · Ministry of Mines and Geology of Guinea, Bureau de Strategie et de Developpement
Q1 2025 (Jan to Mar 2025)	17,013,921 tonnes (basis not stated by the ministry) Quarterly total; the ministry's full-year 2025 bulletin is not among the sources used.	As reported by the Ministry of Mines and Geology of Guinea for the company labelled SMB	Table 1, row 14 SMB, column 'Total Trimestre 1' (Production) · Ministry of Mines and Geology of Guinea, Bureau de Strategie et de Developpement
Q2 2025 (Apr to Jun 2025)	16,986,413 tonnes (basis not stated by the ministry) Quarterly total.	As reported by the Ministry of Mines and Geology of Guinea for the company labelled SMB	Table 2, 'Comparaison des productions et Exportations des T2 et T3', row SMB, column Production Trimestre 2 · Ministry of Mines and Geology of Guinea, Bureau de Strategie et de Developpement
Q3 2025 (Jul to Sep 2025)	14,288,626 tonnes (basis not stated by the ministry) Quarterly total.	As reported by the Ministry of Mines and Geology of Guinea for the company labelled SMB	Table 1, row 16 SMB, column 'Total Trimestre 3' (Production); same value in Table 2 · Ministry of Mines and Geology of Guinea, Bureau de Strategie et de Developpement

Between Q1 2025 (Jan to Mar 2025) and CY2023 the reported figure rose by 159.7%, in the same unit and on the same basis.

Status: operating, as of 30 September 2025.

The ministry's figures are for the producing company labelled SMB, not for a single mine. Output is shown for calendar 2023 and for the first three quarters of 2025; no full-year 2025 figure is used, so no share of world output is computed.
The figures come from the Government of Guinea, not from SMB. The bulletin labels the entry SMB and gives no shareholder information.
The ministry bulletins print more than a dozen producing companies in Guinea. National totals printed by the ministry are 123,067,415 t for 2023 (annual bulletin, cumulative table) and 141,708.9 thousand tonnes for 2024 in the National Institute of Statistics yearbook.
Alumina refineries and aluminum smelters are separate from this bauxite mine entry.
The sources used do not establish who owns SMB, so no owners are listed.

How does it compare?

Other bauxite operations on this site: Weipa (including Amrun), Gove, Porto Trombetas (Mineracao Rio do Norte), Sangaredi (Compagnie des Bauxites de Guinee), Boffa (Chalco Guinea), Pingguo, Shanxi New Materials mines (merged line), Darling Range (Huntly and Willowdale), Juruti, Pocos de Caldas, Paragominas, Panchpatmali bauxite mines. In Guinea: Sangaredi (Compagnie des Bauxites de Guinee), Boffa (Chalco Guinea). See where bauxite comes from for the country totals, the country page for Guinea.

Sources

Ministry of Mines and Geology of Guinea, Bureau de Strategie et de Developpement: Bulletin de statistiques minieres et de carrieres N22, annual bulletin (January to December) 2023 (government statistical bulletin (published on stat-guinee.org), CY2023). Opened 4 November 2026; used: cumulative table (page 2), Table I-1 (monthly bauxite production by mining company, 2023).
Ministry of Mines and Geology of Guinea, Bureau de Strategie et de Developpement: Bulletin de statistiques minieres et de carrieres N27, first quarter (January to March) 2025 (government statistical bulletin (published on stat-guinee.org), Q1 2025). Opened 4 November 2026; used: Table 1 (monthly production and exports by mining company, January to March 2025).
Ministry of Mines and Geology of Guinea, Bureau de Strategie et de Developpement: Bulletin de statistiques minieres et de carrieres N29, third quarter (July to September) 2025 (government statistical bulletin (published on stat-guinee.org), Q2 and Q3 2025). Opened 4 November 2026; used: Table 1 (monthly production and exports by mining company, July to September 2025); Table 2 (comparison of Q2 and Q3).
U.S. Geological Survey: Mineral Commodity Summaries 2026: Bauxite and Alumina (government statistical summary, 2025 (world and country bauxite mine production)). Opened 3 November 2026; used: world mine production and reserves table.

Method and limits

Reported, not estimated. Output is the figure the operator or owner published, in the unit it used. This site does not estimate output where none is published.
Shares. A share divides output in bauxite by the USGS world or country total for 2025. Where the operator's year is a fiscal year or the unit is a concentrate or a carbonate equivalent, the share is approximate or not given.
What is compared. Operators print tonnes of bauxite on a dry or wet basis, or do not say which. USGS bauxite mine production is in dry tonnes, so where the basis differs or is not stated the share is indicative.
Whole operation or owner's share. The basis column says which. A joint venture's output is never counted twice.
Partial list. Only operations with a published figure are listed, so the rank is among those on this site, not among every bauxite mine. Shares of a country's output mix periods and bases, so treat them as indicative.
Made with AI assistance, checked against sources. The facts were gathered from the documents above by AI-assisted research and re-checked against those documents by a second, independent pass; the page text is generated from the data. No professional review took place. How the site is made. To report an error, contact us; fixes are logged on the corrections page.