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Form 425 - Prospectuses and communications, business combinations:
SEC Accession No. 0000950123-11-068577
Filing Date
2011-07-27
Accepted
2011-07-27 06:01:35
Documents
4

Document Format Files

Seq Description Document Type Size
1 FORM 8-K d83814e8vk.htm 425 12130
2 EX-99.1 d83814exv99w1.htm EX-99.1 58468
3 GRAPHIC d83814d8381400.gif GRAPHIC 10225
4 GRAPHIC d83814d8381401.gif GRAPHIC 4448
  Complete submission text file 0000950123-11-068577.txt   92657
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.: 11988681
SIC: 1382 Oil & Gas Field Exploration Services