Louisiana Revised Statutes Tit. 30, § 211. Geophysical and geological survey, and public lands defined

A. “Public lands” means lands belonging to the state or its agencies and which may be leased under Chapter 2 of this Title.

B. “Geophysical and geological survey” means magnetometer surveys, gravitymeter surveys, torsion balance surveys, seismograph surveys, using either the reflection or the refraction method, soil analysis surveys which tend to show the presence or absence of hydrocarbons, electrical surveys, using either the Eltran or some similar method and any method utilizing short wave radio.