Obtention of RMI certification
The Responsible Minerals Initiative (RMI) has confirmed that the cobalt, copper and zinc produced by STL is compliant with its responsible sourcing requirements.
STL provides funding for the new phase of its industrial development
STL announces that it has secured the financing of the new phase of its industrial development, for a total investment amount of 75 million US dollars.
Ebola Statistics
The Democratic Republic of the Congo is currently battling a severe Ebola outbreak in 2026, driven by the rare Bundibugyo strain.
Our Purpose
STL purpose is the processing of slag from the Gécamines concession slag heap and its transformation to extract copper, cobalt, zinc and germanium.
%
Owned by the Gécamines
A major Germanium producer:
%
of global supply
Co
Cu
Zn
Ge
Societe pour le Traitment du Terril de Lubumbashi (STL) complies with RMI responsible sourcing principles.
The Responsible Minerals Initiative (RMI) has confirmed that the cobalt, copper and zinc produced by STL is conformant with its responsible sourcing requirements.
STL obtained its first RMI accreditation in 2021, and has since remained on their conformant list by undergoing yearly independent re-assessments, as part of RMI’s flagship programme, the Responsible Mineral Assurance Process (RMAP).
Remaining RMI conformant is a priority for STL as it demonstrates a commitment to responsible and ethical mineral sourcing, ensuring that supply chains are transparent and free from conflict or human rights abuses
