Kalia Limited announced the finalised results of the geophysical analysis on Exploration Licences 03 and 04 in the Tore region of Bougainville Island in the Autonomous Region of Bougainville, Papua New Guinea. Kalia Limited engaged Fathom Geophysics to complete the re-processing of geophysical data collected in an airborne geophysical survey conducted on behalf of the Geological Survey of PNG (GSPNG) by The Federal Institute for Geosciences and Natural Resources, Federal Republic of Germany (FIGNR) in 1986. The survey recorded Magnetics, Electromagnetics (EM), Gravity and Radiometrics (K, TH, U). Fathom Geophysics Australia Pty Ltd. (Fathom) specializes in exploration under cover and is experienced in epithermal terranes. Fathom undertook reprocessing of the located airborne geophysical data collected by the FIGNR in 1986 and applied modern filtering routines to the gridded data; generating outputs far superior to what was previously available. The re- processing and filtering highlighted geophysical anomalism within the survey area that is comparable to responses over known porphyry related deposits (Bata Hijau, Grasberg, Alumbrera). The located data needed considerable pre-processing prior to making final grids to be filtered. Profiles were manually analysed and quality control measures applied [de-spiking, removal of `turns' and deviations from an acceptable altitude range, de-corrugation]. The EM data were poor but the radiometric and magnetic data were able to be brought up to an acceptable standard for filtering; notwithstanding limitations on positional accuracy and signal noise. The pseudogravity filter involves both pole reduction and vertical integration; which can be thought of as effectively shifting anomalies over their sources and removing the dipolar response of the field [assuming induced magnetization]. The result is a smoothed and simplified version of the magnetic response over the area. The large circular magnetic complex is well highlighted, with the strongest response on the rim of the complex at Melilup. There is a reasonable spatial correlation between discrete elevated magnetic and radiometric anomalies. This observation was combined with an analysis of the SRTM 30m topography data [subtle circular to elliptical depressions specifically] to carry out preliminary targeting runs to identify locations where favourable magnetic, radiometric and topographic responses coincide. Being highly aware of the variable magnetic response of porphyry systems and the limitations of the data by virtue of its vintage; a set of target areas were defined for ground follow-up.