Comprises details of the operations, field acquisition, results and interpretation of the seismic and gravity survey. A total of ~565 miles were recorded, mostly using conventioal methods although some CDP and refraction profiles were shot. Objectives were to investigate anomalies discovered from previous surveys, provide better definition of the Toolachee Field, and general reconnaissance. Several structures have been identified as potential drillsites, others are recommended for further detailing. The gravity survey is reported in Appendix 4. The objective was to aid in the seismic interpretation, add detail and regional control, and to provide maps to assist with programming of future seismic lines. All available gravity control data has been integrated in the Bouguer gravity maps.