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Geophysical Survey Systems, Inc. (GSSI) is the world leader in the development and manufacture of ground penetrating radar (GPR) systems and electromagnetic induction instruments (EM). These systems are used to non-destructively explore the subsurface of the earth and our infrastructure systems. GSSI's leadership in subsurface imaging equipment began with our creation of the first commercial GPR system, called Subsurface Interface Radar (SIR® Systems), and that leadership continues with the current innovations and dedication of our superior technical staff. GSSI now provides the widest range of GPR and EM equipment available, covering all applications from utility location to high-speed highway and railroad data collection. No other GPR manufacturer offers this wide range of products. We provide our customers high quality services and tools to solve their subsurface detection problems. GSSI also manufactures custom equipment for companies who need to solve specific issues, and our technology is sold globally through a worldwide network of representatives.