sentences:  In September 2004, state-owned Gécamines signed an agreement with Global Enterprises Corporate (GEC), a company formed by the merger of Dan Gertler International (DGI) with Beny Steinmetz Global, to rehabilitate and operate the Kananga and Tilwezembe copper mines.The deal was ratified by presidential decree.In 2007, a World Bank report reviewed DR Congo's three biggest mining contracts, finding that the 2005 deals, including one with Global Enterprises Company, were approved with "a complete lack of transparency" (Mahtani, 3 January 2007).