Search U.S. government technical reports digitized or harvested by TRAIL.
An acoustical bench for an ultrasonic pulse system
An ultrasonic method for determining the elastic symmetry of materials
An ultrasonic method for determining the attenuation symmetry of materials
Stress distribution and pillar design in oil shale retorts
Mechanical behavior of coal measure rocks :elastic-inelastic behavior
Stress determination in rock using the Kaiser effect
Electromagnetic investigation of abandoned mines in the Galena, KS, area
Rayleigh wave assessment of damage and integrity of mine structures
Delineation of fractures in igneous rock masses using common offset radar reflection