Men standing with metal hoppers on narrow-gauge tracks:Workers at the Udi coal mine on the hillside above the town of Enugu by E.H. Duckworth in 1930#Enugu #CoalMining #NigerianHistory #IgboHistory #AfricanHistory #ColonialNigeria #UdiCoalMine #EnuguCoal #HistoryOfNigeria #IgboCulture