Press Release Source: TGC Industries, Inc.

TGC Industries Reports Third Quarter 2007 Results

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$17.1 million for same period in 2006. The Company's year to date results reflect the impact of inclement weather during the first and second quarters of 2007.

CONFERENCE CALL

TGC Industries has scheduled a conference call for Monday, October 22, 2007, at 9:30 a.m. eastern time. To participate in the conference call, dial 303-262-2211 at least 10 minutes before the call begins and ask for the TGC Industries conference call. A replay of the call will be available approximately two hours after the live broadcast ends and will be accessible until October 29, 2007. To access the replay, dial 303-590-3000 using a pass code of 11098940.

Investors, analysts and the general public will also have the opportunity to listen to the conference call over the Internet by visiting http://www.tgcseismic.com. To listen to the live call on the web, please visit the website at least fifteen minutes before the call begins to register, download and install any necessary audio software. For those who cannot listen to the live webcast, an archive will be available shortly after the call and will remain available for approximately 90 days at http://www.tgcseismic.com.

TGC Industries, Inc., based in Plano, Texas, with branch offices in Houston, Oklahoma City and Denver, is one of the leading providers of seismic data acquisition services throughout the continental United States.

CONTACTS: Wayne Whitener
Chief Executive Officer
TGC Industries
(972) 881-1099

Jack Lascar, Partner
Karen Roan, SVP
DRG&E (713) 529-6600

This press release includes “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. These forward looking statements are based on our current expectations and projections about future events. All statements other than statements of historical fact included in this press release regarding the Company are forward looking statements. There can be no assurance that those expectations and projections will prove to be correct.