Profile: Seistronix, Inc. manufacturers seismographs for all types of seismic applications, from small geophysical surveys to large scale oil and gas exploration. The EX-6 is a distributed refraction/reflection seismograph designed for 2D and 3D surveys. With its compact six-channel acquisition units, it is well suited for medium & large scale refraction and reflection surveys where portability is important. The system supports up to 600 channels of real-time data acquisition on a single line or up to 3,200 channels on 32 lines in 3D operation. Its applications include oil, gas & mineral exploration, and high resolution geotechnical surveys. The RAS-72, RAS-96 and RAS-120 exploration seismographs provide 72, 96 or 120 seismic channels in a compact, portable package. These seismographs are generally intended for applications where the customer prefers to use existing conventional seismic cables or needs many channels housed in a small package The RAS-120 provides the same level of performance as the RAS-24 and the EX-6 seismographs.