Original oil and gas trade magazine vintage ad for EXPLORATION SURVEYS, INC. Main office and factory was located at 5615 Daniels Street, Dallas, TX. Pinpoint your Scurry County Production target with our Gravimetric Survey. A density of 5.1 stations per square mile resulted in impressive correlations with reef development and structure. This unique 1950 old oilfield petroleum industry magazine advertisement would display beautifully matted and framed.