Croatian research group in the field of geology, geophysics and geodetics has developed a system for indexing the quality of seismic rock mass. The main purpose of the system is to describe the discontinuity depth of 50 m directly from the refractive tomography. The aim of the project is to determine the potential of the system to determine the general mechanical condition especially in carbonate rock weathered zone. They are looking for partners for further development of that project.