Search U.S. government technical reports digitized or harvested by TRAIL.
Bureau of Mines - A.P.I. pressure core barrel :progress report on its design and development
Core-drill sampling of Cuyuna-range manganiferous iron formations, Crow Wing County, Minn.
The stress field within a core stub in a borehole
Improvements in the three-component borehole deformation gage and overcoring techniques
Blasting tests in a porphyry copper deposit in preparartion for in situ extraction
Test procedures for nonlinearly elastic stress-relief overcores