Three gravity traverses have been measured over the Katunga Hills in order to investigate the similarity of the gravity anomaly over them to an anomaly of magnitude 6 mGal just north of Iron Knob. An anomaly of magnitude 3-4 mGal was found centred on the east flank of the Katunga Hills. Both these anomalies can be interpreted as caused by a pitching keel haematite or magnetite quartzite. There seems some doubt as to whether it is necessary to assume a mass of rock of higher density (ore body) to account for the size and shape of the anomaly north of Iron Knob. There is no evidence from the results indicating any ore body in the Katunga Hills Keel.