Geophysical test surveys were made at Boolarra with the object of determining whether geophysical methods were suitable for the exploration of the bauxite deposits found in that district. Field operations were carried out during the period 17th April to 15th May and consisted of the following: 1. Open Cut Deposit - Surface survey and examination of available sub-surface data, geophysical survey using the Resistivity method, over a small area adjacent to the open cut, geophysical survey using the geomagnetic and Natural Earth Potential methods, on one transverse; 2. Orgill's Deposit - Surface survey and examination of available sub-surface data; 3. Budgaree Deposit - Surface survey and examination of available sub-surface data.