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Form 425 - Prospectuses and communications, business combinations:
SEC Accession No. 0000950123-11-045237
Filing Date
2011-05-05
Accepted
2011-05-05 09:40:20
Documents
4

Document Format Files

Seq Description Document Type Size
1 FORM 8-K d82051e8vk.htm 425 12909
2 EX-99.1 d82051exv99w1.htm EX-99.1 39548
3 GRAPHIC d82051d8205100.gif GRAPHIC 5422
4 GRAPHIC d82051d8205101.gif GRAPHIC 3060
  Complete submission text file 0000950123-11-045237.txt   65984
Mailing Address 508 WEST WALL SUITE 800 MIDLAND TX 79701
Business Address 508 WEST WALL SUITE 800 MIDLAND TX 79701 9156843000
DAWSON GEOPHYSICAL CO (Filed by) CIK: 0000351231 (see all company filings)

IRS No.: 750970548 | State of Incorp.: TX | Fiscal Year End: 0930
Type: 425
SIC: 1382 Oil & Gas Field Exploration Services

Mailing Address 101 E. PARK BLVD., SUITE 955 PLANO TX 75074
Business Address 101 E. PARK BLVD., SUITE 955 PLANO TX 75074 9728811099
TGC INDUSTRIES INC (Subject) CIK: 0000799165 (see all company filings)

IRS No.: 742095844 | State of Incorp.: TX | Fiscal Year End: 1231
Type: 425 | Act: 34 | File No.: 001-32472 | Film No.: 11812830
SIC: 1382 Oil & Gas Field Exploration Services