GROUPEMENT DU TERRIL DE LUBUMBASHI (GTL) is a commercial company, a joint-venture which includes the FORREST GROUP and the commercial company GECAMINES SARL. The FORREST GROUP and GÉCAMINES SARL hold respectively 70% and 30% of the shares.
GTL buys slag on the Lubumbashi slag heap from Gécamines SARL, owner of the heap. It entrusts treatment to the SOCIETE POUR LE TRAITEMENT DU TERRIL DE LUBUMBASHI (STL).
After treatment, GTL sells the white copper -cobalt alloy in the form of granules.
Once the slag is treated, so-called impoverished, it is returned to Gécamines. This return of the slag is not insignificant. In a similar way to the project that treats the spoil of an earlier mining activity, the development of new technologies will enable GECAMINES SARL, in the future, to treat anew this same slag.