Dadco is a privately owned investment, manufacturing and trading group with ties to the aluminium industry stretching back over 50 years. Dadco is part of a larger group of companies; the founding company was established in 1915.
In April 2001 Dadco acquired 50 per cent shareholding in the Aluminium Oxid Stade GmbH (AOS) refinery in Germany, after the Alcoa / Reynolds merger in 2000. In June 2004, Dadco purchased the remaining 50 per cent share from Norsk Hydro.
Dadco is a shareholder of Halco Mining Inc in Guinea, this partnership with Alcan Inc., Alcoa World Alumina and Chemicals owns 51% of Compagnie des Bauxites de Guinee (CBG), the remainder being owned by the Government of the Republic of Guinea. CBG has exclusive rights to bauxite reserves and resources in north-western Guinea through 2038. In addition to mining in Sangaredi, CBG operates a facility at the port in Kamsar for drying and shipping bauxite to alumina refineries worldwide.