The African Development Bank (AfDB) and the European Investment Bank (EIB) signed a financing package worth $275-million to help Mauritania upgrade its main railway corridor. Under the agreement, the AfDB will contribute $150-million and the EIB $125-million to modernise the railway linking iron ore mines in Zouerate, in northeastern Mauritania, to the Atlantic port of Nouadhibou, the lenders said in a statement.