Geophysical Survey Systems, Inc., located in North Salem, NH, is the world leader in the development and manufacture of Ground Penetrating Radar Systems, referred to as Subsurface Interface Radar (SIR®) Systems. These systems are used in many different industries, including civil engineering, construction, geology, mining, archeology, and environmental protection, to non-destructively explore the subsurface of the ground for a wide variety of industries and to inspect our infrastructure systems. GSSI created the first commercial GPR system and provides the widest range of equipment covering al