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Dawson Geophysical Company is a provider of North American onshore seismic data acquisition services with operations throughout the continental United States and Canada. The Company acquires and processes two-dimensional (2-D), three-dimensional (3-D) and multi-component seismic data solely for its clients, ranging from major oil and gas companies to independent oil and gas operators, as well as providers of multi-client data libraries. Its seismic data acquisition crews supply seismic data primarily to companies engaged in the exploration and development of oil and natural gas on land and in land-to-water transition areas. In addition to conventional 2-D and 3-D seismic surveys, it provides multi-component seismic data surveys. Multi-component surveys involve the recording of alternative seismic waves known as shear waves. It markets and supplements its services in the continental United States, two other cities in Texas, and in Canada from its facilities in Calgary, Alberta.