Browse TRAIL Inventories

Exploratory drilling practices and costs at western uranium deposits

Deformation of a borehole in rock

Drillability studies :diamond drilling

The stress field within a core stub in a borehole

Accuracy in estimating metal content and tonnage of an ore body from diamond-drill-hole data

Design of drill-hole grid spacings for evaluating low-grade copper deposits

Drillability studies :statistical regression analysis of diamond drilling

Inelastic deformation of rock under a hemispherical drill bit

Drillability studies :impregnated diamond bits

Calculation of the average ground stress components from measurements of the diametral deformation of a drill hole

Explosive-expansion center-hole anchor

Horizontal boring technology :a state-of-the-art study,

Two borehole photograph goniometers

Drillability studies-laboratory percussive drilling

Energetics of percussive drills-longitudinal strain energy


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