Dawson Geophysical Plans Additional Expansion

Dawson Geophysical Company intends to field its ninth high resolution seismic data acquisition crew in early September, 2004. The Company's eighth crew, planning for which was announced on June 3, 2004, was deployed July 12, 2004. The Company is responding to increased client requirements emanating from increased prices received for crude oil and natural gas.

Founded in 1952, Dawson Geophysical Company acquires and processes 2-D, 3-D and multi-component seismic data used in analyzing subsurface geologic conditions for the potential of oil and natural gas accumulation. Dawson's clients -- major and intermediate-sized oil and gas companies and independent oil operators -- retain exclusive rights to the information obtained.

The Company operates highly mobile, land-based acquisition crews throughout the lower 48 states. Data processing is performed by geophysicists at Dawson's computer center in the Midland, Texas headquarters. The Company also provides data processing services through its Houston, Texas office.