Search U.S. government technical reports digitized or harvested by TRAIL.
Comparative advantages of applying several geophysical methods of prospecting to the same territory
Practical rules for the use of the magnetometer in geophysical prospecting
Prospecting and exploration for sand and gravel
Induction prospecting for shallow ore deposits and small metallic objects
Geophysical prospecting for underground waters in desert areas
A solid-state amplifier for the bridge circuit of a mercury detector
Evaluation of a radioisotopic X-ray drill-hole probe :delineation of lead ores
Calibration models for geophysical borehole logging
High-resolution seismic reflection techniques for mapping coal seams from the surface