U.S. SECURITIES AND EXCHANGE Washington, D.C. 20549 FORM 10-QSB (Mark One) [X] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD ENDING JUNE 30, 2004. [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM ________ TO _________. Commission File Number 0-14908 TGC INDUSTRIES, INC. (Exact name of small business issuer as specified in its charter) Texas 74-2095844 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) 1304 Summit, Suite 2 Plano, Texas 75074 (Address of principal executive offices) (Zip Code) Issuer's telephone number, including area code: 972-881-1099 Check whether the issuer (1) filed all reports required to be filed by Section 13 or 15 (d) of the Exchange Act during the past 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes X No State the number of shares outstanding of each of the issuer's classes of common equity, as of the latest practicable date. Class Outstanding at July 30, 2004 Common Stock ($.01 Par Value) 5,729,948 PART I -- FINANCIAL INFORMATION ITEM 1 -- FINANCIAL STATEMENTS Incorporated herein is the following unaudited financial information: Balance Sheet as of June 30, 2004. Statements of Income for the three and six month periods ended June 30, 2004 and 2003. Statements of Cash Flows for the six-month periods ended June 30, 2004 and 2003. Notes to Financial Statements. TGC INDUSTRIES, INC. BALANCE SHEET (UNAUDITED) JUNE 30, 2004 _____________ ASSETS CURRENT ASSETS Cash and cash equivalents $4,257,181 Trade accounts receivable 1,641,441 Cost and estimated earnings in excess of billings on uncompleted contracts 6,235 Prepaid expenses and other 123,228 ___________ Total current assets 6,028,085 PROPERTY AND EQUIPMENT - at cost Machinery and equipment 13,146,750 Automobiles and trucks 1,267,338 Furniture and fixtures 332,754 Other 18,144 ____________ 14,764,986 Less accumulated depreciation and amortization (12,764,033) ____________ 2,000,953 OTHER ASSETS 3,395 ____________ Total assets $8,032,433 ============ See notes to Financial Statements TGC INDUSTRIES, INC. BALANCE SHEET -- CONTINUED (UNAUDITED) JUNE 30, 2004 ______________ LIABILITIES AND STOCKHOLDERS' EQUITY CURRENT LIABILITIES Trade accounts payable $1,660,022 Accrued liabilities 78,099 Billings in excess of costs and estimated earnings on uncompleted contracts 2,570,688 Current maturities of notes payable 147,334 Current portion of capital lease obligations 77,917 ___________ Total current liabilities 4,534,060 NOTES PAYABLE, less current maturities 95,095 CAPITAL LEASE OBLIGATIONS, less current portion 281,155 COMMITMENTS AND CONTINGENCIES - STOCKHOLDERS' EQUITY Preferred stock, $1.00 par value; 4,000,000 shares authorized: 8-1/2% Senior convertible preferred stock; 3,024,264 shares issued and outstanding 3,024,264 8% Series C convertible exchangeable preferred stock; 1,150,350 shares issued, 58,100 shares outstanding 58,100 Common stock, $.01 par value; 25,000,000 shares authorized; 5,761,892 shares issued 57,619 Additional paid-in capital 6,564,718 Accumulated deficit (6,367,264) Treasury stock, at cost (31,944 shares) (215,314) ___________ 3,122,123 ___________ Total liabilities and stockholders' equity $8,032,433 =========== See notes to Financial Statements TGC INDUSTRIES, INC. STATEMENTS OF INCOME Three Months Ended Six Months Ended June 30, June 30, ________________________ _________________________ (Unaudited) (Unaudited) 2004 2003 2004 2003 ___________ ___________ ___________ ___________ Revenue $4,783,197 $2,835,401 $7,754,069 $4,437,206 Cost of services 3,981,134 2,369,624 5,859,028 3,807,055 Selling, general, administrative 276,480 244,988 576,875 450,737 ___________ ___________ ___________ ___________ 4,257,614 2,614,612 6,435,903 4,257,792 INCOME FROM OPERATIONS 525,583 220,789 1,318,166 179,414 Interest expense 5,334 2,274 8,402 4,378 ___________ ___________ ___________ ___________ NET INCOME 520,249 218,515 1,309,764 175,036 Less dividend requirements on preferred stock 79,716 74,776 159,431 148,588 ___________ ___________ ___________ ___________ INCOME ALLOCABLE TO COMMON STOCKHOLDERS $ 440,533 $ 143,739 $1,150,333 $ 26,448 Income per common share: Basic $ .08 $ .03 $ .20 $ .00 Diluted $ .04 $ .03 $ .11 $ .00 Weighted average number of common shares: Basic 5,726,881 5,515,064 5,710,973 5,515,064 Diluted 12,015,284 5,515,064 11,796,154 5,515,064 See notes to Financial Statements TGC INDUSTRIES, INC. Statements of Cash Flows (Unaudited) Six Months Ended June 30, ________________________ 2004 2003 __________ ___________ CASH FLOWS FROM OPERATING ACTIVITIES Net income $1,309,764 $ 175,036 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization 432,709 732,271 Directors fees 11,512 - Warrants issued for services 5,319 - Gain on disposal of property and equipment - (9,349) Changes in operating assets and liabilities Trade accounts receivable (843,987) (25,329) Cost and estimated earnings in excess of billings on uncompleted contracts 24,259 32,845 Prepaid expenses and other (16,906) 45,381 Other assets 1,429 - Trade accounts payable 1,539,873 (108,025) Accrued liabilities (27,208) (19,023) Billings in excess of cost and estimated earnings on uncompleted contracts 2,274,709 (582,281) ___________ __________ NET CASH PROVIDED BY OPERATING ACTIVITIES 4,711,473 241,526 CASH FLOWS FROM INVESTING ACTIVITIES Capital expenditures (1,227,158) (74,264) Proceeds from sale of property and equipment - 9,349 ___________ __________ NET CASH USED IN INVESTING ACTIVITIES (1,227,158) (64,915) CASH FLOWS FROM FINANCING ACTIVITIES Dividends paid (147,811) - Principal payments on notes payable (32,637) (132,201) Principal payments on capital lease obligations (71,907) (90,669) ___________ __________ NET CASH USED IN FINANCING ACTIVITIES (252,355) (222,870) NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS 3,231,960 (46,259) CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD 1,025,221 523,120 ___________ __________ CASH AND CASH EQUIVALENTS AT END OF PERIOD $4,257,181 $ 476,861 =========== ========== Supplemental cash flow information Interest paid $ 8,402 $ 2,274 Income taxes paid $ - $ - Noncash investing and financing activities Capital lease obligations incurred $ 235,775 $ - Financed equipment purchase $ 176,094 $ - At the election of the Senior Preferred Stockholder, 118,265 and 123,291 shares of 8.5% Senior Preferred Stock were issued to the Senior Preferred Stockholder as payment for the June 1, 2003 and December 1, 2003 dividends, respectively. See notes to Financial Statements TGC INDUSTRIES, INC. NOTES TO FINANCIAL STATEMENTS (UNAUDITED) June 30, 2004 NOTE A -- BASIS OF PRESENTATION The accompanying unaudited financial statements have been prepared in accordance with the instructions to Form 10-QSB and therefore do not include all information and footnotes necessary for a fair presentation of financial position, results of operations and changes in financial position in conformity with accounting principles generally accepted in the United States of America. NOTE B -- MANAGEMENT PRESENTATION In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of financial position, results of operations, and changes in financial position have been included. The results of the interim periods are not necessarily indicative of results to be expected for the entire year. For further information, refer to the financial statements and the footnotes thereto included in the Company's Annual Report for the year ended December 31, 2003 filed on Form 10-KSB. NOTE C -- EARNINGS PER SHARE Basic earnings per common share are based upon the weighted average number of shares of common stock outstanding. Diluted earnings per share are based upon the weighted average number of common shares outstanding and, when dilutive, common shares issuable for stock options, warrants and convertible securities. The effect of preferred stock dividends on the amount of income available to common stockholders was $.01 for the three months ended June 30, 2004 and 2003, and $.03 for the six months ended June 30, 2004 and 2003. Outstanding warrants that were not included in the diluted calculation because their effect would be anti-dilutive totaled 2,350,000 for the three and six month periods ended June 30, 2003. Outstanding options that were not included in the diluted calculation because their effect would be anti-dilutive totaled 222,100 for each of the three and six month periods ended June 30, 2003. TGC INDUSTRIES, INC. NOTES TO FINANCIAL STATEMENTS (UNAUDITED) June 30, 2004 NOTE C EARNINGS PER SHARE - (Continued) The following is a reconciliation of net income and weighted average common shares outstanding for purposes of calculating basic and diluted net income per share: Three Months Ended Six Months Ended June 30, June 30, _______________________________________________ (Unaudited) (Unaudited) 2004 2003 2004 2003 __________ _________ _________ _________ Basic: Numerator: Net income $520,249 $218,515 $1,309,764 $175,036 Less dividend requirements on preferred stock (79,716) (74,776) (159,431) (148,588) _________ _________ ___________ _________ Income allocable to common stockholders $440,533 $143,739 $1,150,333 $26,448 Denominator: Basic - weighted average common shares outstanding 5,726,881 5,515,064 5,710,973 5,515,064 __________ _________ _________ __________ Basic EPS $ .08 $ .03 $ .20 $ .00 Diluted: Numerator: Income allocable to common stockholders $440,533 $143,739 $1,150,333 $26,448 Plus dividend requirements on preferred stock 79,716 74,776 159,431 148,588 _________ _________ __________ ________ Net income $520,249 $218,515 $1,309,764 $175,036 Denominator: Weighted average common shares outstanding 5,726,881 5,515,064 5,710,973 5,515,064 Effect of Dilutive Securities: Warrants 3,092,335 - 2,948,180 - Stock options 123,387 - 64,320 - Convertible Preferred Stock 3,072,681 - 3,072,681 - __________ _________ __________ _________ 12,015,284 5,515,064 11,796,154 5,515,064 Diluted EPS $ .04 $ .03 $ .11 $ .00 TGC INDUSTRIES, INC. NOTES TO FINANCIAL STATEMENTS (UNAUDITED) June 30, 2004 NOTE D DIVIDENDS Holders of the Company's Series C 8% Convertible Exchangeable Preferred Stock ("Series C Preferred Stock") will receive, when, as and if declared by the Board of Directors of the Company, dividends at a rate of 8% per annum. The dividends are payable semi-annually during January and July of each year. At June 30, 2004, cumulative dividends of $127,820 were in arrears on the Company's Series C Preferred Stock. Holders of the Company's 8-1/2% Senior Convertible Preferred Stock (the "Senior Preferred Stock") will receive, when, as and if declared by the Board of Directors of the Company, dividends at a rate of 8-1/2% per annum. The dividends are payable semi-annually during June and December of each year. Dividends paid during 2000, on the Senior Preferred Stock, were paid in additional shares of Senior Preferred Stock, in accordance with the terms of the Statement of Resolution Establishing the Senior Preferred Stock. In addition, the holders elected to receive payment of the 2001, 2002 and 2003 dividends in additional shares of Senior Preferred Stock. A cash dividend of $147,811 was paid to the Senior Preferred Shareholders in June 2004. At June 30, 2004, there were no dividends in arrears on the Company's Senior Preferred Stock. NOTE E INCOME TAXES At December 31, 2003, the Company had net operating loss carryforwards of approximately $7,900,000 available to offset future taxable income, which expire at various dates through 2023. Current year federal taxable income is being offset with net operating loss carryforwards, therefore, no federal tax expense is reflected on the statements of income. Presently deferred tax assets are fully reserved. ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS. RESULTS OF OPERATIONS The Company experienced an increase in demand for its services in late 2003 and secured a sufficient number of contracts to keep two seismic crews employed during the first six months of 2004. In June 2004, the Company deployed its third seismic crew. As a result, TGC reported net income, before dividend requirements on preferred stock, of $1,309,764 on revenue of $7,754,069, for the six month period ended June 30, 2004 compared with net income, before dividend requirements on preferred stock, of $175,036 on revenue of $4,437,206 for the same period of 2003. Income per common share, on a basic and diluted basis, was $.20 and $.11, respectively, for the six month period ended June 30, 2004, compared with net income per common share, on a basic and diluted basis, of $.00 for the same period of 2003. At December 31, 2003, TGC had net operating loss carryforwards of approximately $7,900,000 available to offset future taxable income, which expire at various dates through 2023. As a result, the basic and diluted earnings per common share for the three and six months ended June 30, 2004, was based on net income before any provision for income taxes. See Note E. TGC reported net income, before dividend requirements on preferred stock, of $520,249 on revenue of $4,783,197, for the three month period ended June 30, 2004 compared with net income, before dividend requirements on preferred stock, of $218,515 on revenue of $2,835,401 for the same period of 2003. Income per common share, on a basic and diluted basis, was $.08 and $.04, respectively, for the three month period ended June 30, 2004, compared with net income per common share, on a basic and diluted basis, of $.03 for the same period of 2003. The number of common shares used in the income per share computation for the three and six month periods ended June 30, 2003 do not include any common shares issuable for stock options and warrants because the exercise price of such options and warrants exceeded the average market price of the common stock or convertible securities and the effect of their inclusion would therefore be anti-dilutive. Oil and gas exploration companies have recently increased the level of activity in their domestic oil and gas exploration programs. Though there can be no assurance, should this increased level of activity in the industry continue, management believes TGC may secure enough contracts to enable the Company to keep its three seismic crews employed for the remainder of 2004 thereby improving its performance during 2004 compared with 2003. Non-cash charges for depreciation and amortization were $432,709 in the first six months of 2004 compared with $732,271 for the same period of 2003. FINANCIAL CONDITION Cash of $4,711,473 was provided by operations during the first six months of 2004 compared with cash provided by operations of $241,526 for the same period of 2003. This increase was primarily the result of the increase in net income and the increasing level of activity in the first six months of 2004 compared with the same period of 2003. During the first six months of 2004, $1,227,158 was used in investing activities for capital expenditures for additional vehicles and seismic equipment. Dividend payments to the Senior Preferred Shareholders of $147,811, principal payments of notes payable of $32,637 and principal payments of capital lease obligations of $71,907 resulted in net cash of $252,355 being used in financing activities during the first six months of 2004. TGC anticipates that available funds, together with anticipated cash flows generated from future operations, will be sufficient to meet TGC's minimum lease and note payment obligations. In September 2002, TGC issued 1,500,000 stock warrants to certain directors in exchange for a line of credit, that expired December 31, 2002, in an amount up to $300,000. The warrants cover 1,500,000 shares of Common Stock, expire on September 10, 2012, and are exercisable at $.20 per whole share. During September 2002, TGC borrowed $150,000 of the available funds. The promissory notes, which bore interest at 6.75% per annum, were paid in full during December 2002 and January 2003. In March 2003, the same group of directors committed to provide a line of credit up to $300,000 through December 31, 2003. Warrants covering 750,000 shares of Common Stock were issued in consideration for the commitment to provide the line of credit. The warrants expire on June 12, 2013, and are exercisable at $.20 per whole share. The Company had no borrowings against the line of credit in 2003. Working capital increased $167,431 to $1,494,025 at June 30, 2004 from the December 31, 2003, working capital of $1,326,594. The Company's current ratio was 1.3 at June 30, 2004, compared with 3.1 at December 31, 2003. Stockholders' equity increased $1,178,784 to $3,122,123 at June 30, 2004 from the December 31, 2003 balance of $1,943,339. This increase was primarily attributable to the net income, before dividend requirements on preferred stock, of $1,309,764 offset by the dividend paid to the Senior Preferred Shareholders of $147,811. Management believes, although there can be no assurance, that available funds together with anticipated cash flows generated from future operations will be sufficient to meet the Company's cash needs during 2004. Forward-Looking Statements This report contains forward-looking statements which reflect the view of Company's management with respect to future events. Although management believes that the expectations reflected in such forward-looking statements are reasonable; it can give no assurance that such expectations will prove to have been correct. Important factors that could cause actual results to differ materially from such expectations are disclosed in the Company's Securities and Exchange Commission filings, and include, but are not limited to the dependence upon energy industry spending for seismic services, the unpredictable nature of forecasting weather, the potential for contract delay or cancellation, the potential for fluctuations in oil and gas prices, and the availability of capital resources. The forward-looking statements contained herein reflect the current views of the Company's management and the Company assumes no obligation to update the forward-looking statements or to update the reasons actual results could differ from those contemplated by such forward-looking statements. ITEM 3. CONTROLS AND PROCEDURES As of the end of the period covered by this quarterly report, the Company carried out an evaluation, under the supervision and with the participation of the Company's management, including the Company's Chief Executive Officer and Principal Financial and Accounting Officer, of the effectiveness of the design and operation of the Company's disclosure controls and procedures pursuant to Securities Exchange Act Rule 13a-15(b) and 15d-15(b). Based upon that evaluation, the Chief Executive Officer and Principal Financial and Accounting Officer concluded that the Company's disclosure controls and procedures are effective. There were no significant changes in the Company's internal controls or in other factors that could significantly affect these controls during the Company's last fiscal quarter. PART II - OTHER INFORMATION ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS The annual meeting of shareholders was held June 8, 2004. The following matters were voted upon and approved by the Company's shareholders: a. Election to the Board of Directors of Messrs. Edward L. Flynn, Herbert M. Gardner, Allen T. McInnes, William J. Barrett, William C. Hurtt, Jr. and Wayne A. Whitener was approved by the Shareholders by a majority vote by a vote of 7,382,554 to 21,188. b. Ratification of the selection of the Company's auditors, Lane Gorman Trubitt, L.L.P., was approved by the shareholders by a majority vote by a vote of 7,401,589 to 2,103 with 50 abstaining. ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K a. The following is a list of exhibits to this Form 10-QSB: 31.1 Certification of Chief Executive Officer of TGC Industries, Inc. pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 31.2 Certification of Treasurer (Principal Financial and Accounting Officer) of TGC Industries, Inc. pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 32.1 Certification of Chief Executive Officer of TGC Industries, Inc. pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 32.2 Certification of Treasurer (Principal Financial and Accounting Officer) of TGC Industries, Inc. pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. b. Reports on Form 8-K: Two reports under Item 5 of Form 8-K were filed during the reporting period, as follows: 1. A Report on Form 8-K was filed on April 22, 2004, to report the Company's issuance of a press release reporting its results for the first quarter of 2004. 2. A Report on Form 8-K was filed on June 17, 2004, to report the Company's issuance of a press release announcing an increase in demand for the Company's services, securing a sufficient number of contracts to deploy a third seismic crew. SIGNATURES In accordance with the requirements of the Exchange Act, the registrant caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. TGC INDUSTRIES, INC. Date: August 12, 2004 /s/ Wayne A. Whitener Wayne A. Whitener President & Chief Executive Officer (Principal Executive Officer) Date: August 12, 2004 /s/ Kenneth W. Uselton Kenneth W. Uselton Treasurer (Principal Financial and Accounting Officer) EXHIBIT 31.1 CERTIFICATION OF CHIEF EXECUTIVE OFFICER I, Wayne A. Whitener, Chief Executive Officer of TGC Industries, Inc. certify that: 1. I have reviewed this quarterly report on Form 10-QSB of TGC Industries, Inc.; 2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report; 3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report; 4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and we have: a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared; b) evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this quarterly report based on such evaluation; and c) disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. 5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function): a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting. Date: August 12, 2004 /s/ Wayne A. Whitener Wayne A. Whitener President & Chief Executive Officer (Principal Executive Officer) EXHIBIT 31.2 CERTIFICATION OF PRINCIPAL FINANCIAL OFFICER I, Kenneth W. Uselton, Principal Financial Officer of TGC Industries, Inc. certify that: 1. I have reviewed this quarterly report on Form 10-QSB of TGC Industries, Inc.; 2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report; 3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this quarterly report; 4. The registrant's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the registrant and we have: a) designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared; b) evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this quarterly report based on such evaluation; and c) disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting. 5. The registrant's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of registrant's board of directors (or persons performing the equivalent function): a) all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and b) any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting. Date: August 12, 2004 /s/ Kenneth W. Uselton Kenneth W. Uselton Treasurer (Principal Financial and Accounting Officer) EXHIBIT 32.1 Certification of Chief Executive Officer of TGC Industries, Inc. Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 This certification is furnished solely pursuant to Section 906 of the Sarbanes- Oxley Act of 2002 (18 U.S.C. 1350) and accompanies the quarterly report on Form 10-QSB (the "Form 10-QSB") for the quarter ended June 30, 2004 of TGC Industries, Inc. (the "Company"). I, Wayne A. Whitener, the Chief Executive Officer of the Company, certify that, to the best of my knowledge: (1) The Form 10-QSB fully complies with the requirements of section 13(a) or section 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in the Form 10-QSB fairly presents, in all material respects, the financial condition and results of operations of the Company. Dated: August 12, 2004 /s/ Wayne A. Whitener Wayne A. Whitener Chief Executive Officer EXHIBIT 32.2 Certification of Treasurer (Principal Financial and Accounting Officer) of TGC Industries, Inc. Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 This certification is furnished solely pursuant to Section 906 of the Sarbanes- Oxley Act of 2002 (18 U.S.C. 1350) and accompanies the quarterly report on Form 10-QSB (the "Form 10-QSB") for the quarter ended June 30, 2004 of TGC Industries, Inc. (the "Company"). I, Kenneth W. Uselton, Secretary/ Treasurer (Principal Financial and Accounting Officer) of the Company, certify that, to the best of my knowledge: (1) The Form 10-QSB fully complies with the requirements of section 13(a) or section 15(d) of the Securities Exchange Act of 1934; and (2) The information contained in the Form 10-QSB fairly presents, in all material respects, the financial condition and results of operations of the Company. Dated: August 12, 2004 /s/ Kenneth W. Uselton Kenneth W. Uselton Treasurer (Principal Financial and Accounting Officer)