0000929966-02-000016 8-K 1 20020520 5 7 20020521 TGC INDUSTRIES INC 0000799165 2673 742095844 TX 1231 8-K 34 000-14908 02658842 1304 SUMMIT AVE STE 2 PLANO TX 75074 9728811099 1304 SUMMIT AVE STE 2 PLANO TX 75074 8-K 1 form8-kdelist.txt TGC INDUSTRIES, INC. FORM 8-K (DELISTING FROM NASDAQ)