Dawson Geophysical Company is a provider of onshore seismic data acquisition and processing services in the lower 48 states of the United States. The Company acquires and processes two dimensional (2-D), three dimensional (3-D) and multi-component seismic data for it�s clients, ranging from oil and gas companies to independent oil and gas operators, as well as providers of multi-client data libraries. During the fiscal year ended September 30, 2013 (fiscal 2013), the Company operated up to 14 3-D seismic data acquisition crews in the lower 48 states of the United States, one seismic data acquisition crew during the Canadian winter season and one seismic data processing center. It performs data processing in the Company's Midland, Houston and Oklahoma City offices, and its field operations are supported from its field office facility in Midland. The Company operates in contract seismic data acquisition and processing services segment.