P112 Seismic Tomography Applications to Investigate Rock Mass M.G. Tirkel* (National Academy of Sciences of Ukraine) A.V. Antsyferov (National Academy of Sciences of Ukraine UkrNIMI) V.A. Antsyferov (National Academy of Sciences of Ukraine UkrNIMI) & O.I. Kompanets (National Academy of Sciences of Ukraine UkrNIMI) SUMMARY Increase in efficiency of geological exploration is determined to a considerable extent by combination of geological and up-to-date geophysical methods that provides more complete detailed 3-D and reliable research into near-surface section geological processes and effects and also prediction of industrial intervention. Hardware-research systems for geophysical support of engineering geology have been developed. Operation of