Search U.S. government technical reports digitized or harvested by TRAIL.
Design of underground mine openings oil-shale mine, Rifle, Colo.
Roof-span studies in limestone
Method of determining the strength of a mine roof
Oil-Shale mine, Rifle, Colo. :a review of design factors
Determining the in-place support of mine roof with rock bolts, White Pine Copper Mine, Michigan
Deformation of a borehole in rock
Changes in stress concentration created by undercutting in block caving
Borehole deformation gage for determining the stress in mine rock
Three-component borehole deformation gage for determining the stress in rock