9999999995-12-001117.txt : 20120423 9999999995-12-001117.hdr.sgml : 20120423 20120423001522 ACCESSION NUMBER: 9999999995-12-001117 CONFORMED SUBMISSION TYPE: EFFECT PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20120420 DATE AS OF CHANGE: 20120423 EFFECTIVENESS DATE: 20120420 FILER: COMPANY DATA: COMPANY CONFORMED NAME: DAWSON GEOPHYSICAL CO CENTRAL INDEX KEY: 0000351231 STANDARD INDUSTRIAL CLASSIFICATION: OIL AND GAS FIELD EXPLORATION SERVICES [1382] IRS NUMBER: 750970548 STATE OF INCORPORATION: TX FISCAL YEAR END: 0930 FILING VALUES: FORM TYPE: EFFECT SEC ACT: 1933 Act SEC FILE NUMBER: 333-180563 FILM NUMBER: 12771896 BUSINESS ADDRESS: STREET 1: 508 WEST WALL STREET 2: SUITE 800 CITY: MIDLAND STATE: TX ZIP: 79701 BUSINESS PHONE: 9156843000 MAIL ADDRESS: STREET 1: 508 WEST WALL STREET 2: SUITE 800 CITY: MIDLAND STATE: TX ZIP: 79701 EFFECT 1 primary_doc.xml X0101 EFFECT 33 LIVE 2012-04-20 15:00:00

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0000351231 DAWSON GEOPHYSICAL CO 333-180563