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Private company

Sociedade de Desenvolvimento Mineiro

Angolan public mining company

Sociedade de Desenvolvimento Mineiro (SDM) is an Angolan public mining company and holds the mining rights in an area of concession of 2,950 km2, located in the hydrological basin of Cuango River, Lunda Norte Province. SDM is a joint venture between the Angolan public company Endiama (National Diamond Company of Angola), and the Brazilian private company OMSI (Odebrecht Mining Services Inc).2 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

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Photo: Brian Harrington Spier from Shanghai, China, CC BY-SA 2.0, via Wikimedia Commons3

Sociedade de Desenvolvimento Mineiro (SDM) is an Angolan public mining company and holds the mining rights in an area of concession of 2,950 km2, located in the hydrological basin of Cuango River, Lunda Norte Province. SDM is a joint venture between the Angolan public company Endiama (National Diamond Company of Angola), and the Brazilian private company OMSI (Odebrecht Mining Services Inc).2

Sources

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