Belirti has been founded in 1987. Main working fields cover overall geosciences in order to explore underground. These are soil investigation, groundwater investigation, mine study, geology, engineering geology, geophysical exploration, drilling, geotechnical instrumentation and geotechnical studies. Belirti has signed many significant projects both in Turkey and abroad for numerous well known companies, joint ventures, municipalities, universities and cooperative unions. Surface Geophysics -Seismic Refraction- MASW- REMI -Seismic Reflection -Resistivity 2D-3D Tomography-VES-SP -Microtremor Borehole Geophysics -Crosshole Seismic Refraction -Crosshole Seismic Tomography -Crosshole Resistivity 2D-3D Tomography -Suspension PSlogging -Downhole Offshore Geophysics -Marine 2D-3D Resistivity Tomography Belirti also cooperates with high technology producers, especially with geotechnical instrumentation. One of these is Geokon Instruments Inc. based in USA. Geokon is a well known geotechnical instrumentation company all over the world. More then a decade, Belirti has acted to supply, to install and to monitor geotechnical goods for significant projects. www.geokon.com The Second firm is Smartec based in Switzerland. www.smartec.ch Another company is Nanometrics based in Canada who produces earthquake instrumentation. www.nanometrics.ca Belirti may serve supply, install and monitor of the instruments on these items individually or as a turn key project.