Sylvia Mlimi, Angel Mona and Setty Mndawe with the coal they have collected. Everyday they need to go out in search of coal for cooking and keeping their home warm during the winter months. Over recent decades, a number of studies have drawn attention to the higher than normal rates of respiratory disease and stunted growth in children. The result of children being exposed to coal smoke from incomplete combustion coal processes. Likazi Informal settlement on Coronation Colliery in Witbank.