Mining companies in the Democratic Republic of Congo asked the government to adjust pending value-added tax repayments for a slump in the franc that could cost them as much as $210-million collectively. Federation des Entreprises du Congo, the country’s largest business lobby group, sent the request in a letter to Finance Minister Henri Yav Mulang on May 5. John Nkono, the secretary-general of the FEC’s Chamber of Mines, said Wednesday the group is still waiting for a response.