EX-21.1 3 a2227664zex-21_1.htm EX-21.1
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Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT

Dawson Operating LLC, a Texas limited liability company

Eagle Canada, Inc., a Delaware corporation

Dawson Seismic Services Holdings, Inc., a Delaware corporation

Eagle Canada Seismic Services ULC, a Canadian corporation

Tidelands Geophysical Co., Inc., a Texas corporation

Exploration Surveys, Inc., a Texas corporation

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Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT