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Form 425 - Prospectuses and communications, business combinations:
SEC Accession No. 0000950123-11-027009
Filing Date
2011-03-21
Accepted
2011-03-21 06:34:21
Documents
22

Document Format Files

Seq Description Document Type Size
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5 EX-10.1 d80812exv10w1.htm EX-10.1 40614
6 EX-10.2 d80812exv10w2.htm EX-10.2 91212
7 EX-99.1 d80812exv99w1.htm EX-99.1 43406
8 EX-99.2 d80812exv99w2.htm EX-99.2 18345
9 EX-99.3 d80812exv99w3.htm EX-99.3 11887
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  Complete submission text file 0000950123-11-027009.txt   2303855
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.: 11699785
SIC: 1382 Oil & Gas Field Exploration Services