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Form 425 - Prospectuses and communications, business combinations:
SEC Accession No. 0000950123-11-091530
Filing Date
2011-10-24
Accepted
2011-10-24 17:19:16
Documents
3

Document Format Files

Seq Description Document Type Size
1 FORM 8-K d85275e8vk.htm 425 14617
2 EX-99.1 d85275exv99w1.htm EX-99.1 14754
3 GRAPHIC d85275d8527500.gif GRAPHIC 12522
  Complete submission text file 0000950123-11-091530.txt   48314
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.: 111155080
SIC: 1382 Oil & Gas Field Exploration Services