Search U.S. government technical reports digitized or harvested by TRAIL.
Measurement of pressures on rock pillars in underground mines.
Measurement of pressures on rock pillars in underground mines.
The microseismic method of predicting rock failure in underground mining.
The microseismic method of predicting rock failure in underground mining.
Standardized tests for determining the physical properties of mine rock
A gage and recording equipment for measuring dynamic strain in rock
Generation and propagation of strain waves in rock :part I
A study of the air and rock vibrations produced by impact testing of mine roof
Biaxial device for determining the modulus of elasticity of stress-relief cores
Effects of stress relief and other changes in stress on the physical properties of rock
A method of determining dynamic tensile strength of rock at minimum loading
Changes in stress concentration created by undercutting in block caving
Effect of decoupling on explosion-generated strain pulses in rock
Inelastic deformation of rock under a hemispherical drill bit
Presplitting rock in the presence of a static stress field
Analysis of stresses in a rock disk subjected to peripheral thermal shock
Deep mine stress determinations using flatjack and borehole deformation methods
Piezoelectric pulsing equipment for shear wave velocity measurements in rock samples
Near-surface horizontal stresses including the effects of rock anisotropy
An ultrasonic method for determining the elastic symmetry of materials
An ultrasonic method for determining the attenuation symmetry of materials
Rock noise source location techniques
A method for estimating strength of rock containing planes of weakness
A least squares method for improving the source location of rock noise
Determination of attitudes of joints surveyed with a borescope in inclined boreholes
Rock damage from small charge blasting in granite
Strengthening of fractured rock pillars by the use of small radial reinforcement pressures
Bureau of Mines test procedures for rocks,
A new method of analysis to obtain exact solutions for stresses and strains in circular inclusions
A standard rock suite for rapid excavation research
NX borehole jack modulus determinations in homogeneous, isotropic, elastic materials
Chemical analysis of slickensides from coal mine roof shale
Structural analysis of a coal mine opening in elastic, multilayered material
Tilt precursors in rock before failure :a laboratory investigation
Thermomechanical method for secondary breakage of hard rocks
Submersion testing of coatings for sealing shale
Iterative approximation techniques for microseismic source location
Effects of time between exposure and support on mine roof stability, Bear Coal Mine, Somerset, Colo.
Pillar failure analysis and in situ stress determinations at the Fletcher mine near Bunker, Mo.
Geology of the single-entry project at Sunnyside Coal Mines 1 and 2, Sunnyside, Utah