Abstract

a. Camp Maintenance and Operation, Northwest Seismic Surveys, Limited. b. Seismograph Operations on Foot. c. Seismograph Operations with Horses, Carter Oil Company. d. Seismograph Operations Using Small Tractors and Trailers. e. Seismograph Operations with Weasels, Geophysical Service Incorporated--Pierson Ralph. f. The Helicopter as Used on Gravity Operations, United Geophysical Company--Wayne Phares. End_of_Article - Last_Page 2251------------

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