TGC Industries, Inc. provides seismic data acquisition services. The company along with its subsidiary, Eagle Canada, Inc., engages in the geophysical service business of conducting three dimensional surveys for clients in the oil and gas business. Its services are also used by the potash mining industry in Canada. The company provides seismic data acquisition services primarily to onshore oil and natural gas exploration and development companies for use in the onshore drilling and, production of oil and natural gas in the continental United States and Canada. TGC Industries was founded in 1967 and is headquartered in Plano, TX.