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United States Bureau of Mines
Industry: Mining
Number of terms: 33118
Number of blossaries: 0
Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources. Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
Drilled or excavated downward.
Industry:Mining
Drillers' term for friable sandstone that caves into wells and settles around the bit.
Industry:Mining
Drillers' term in the Appalachian basin for well cuttings of dark-colored shale chips mixed wih light-colored mud.
Industry:Mining
Drilling a borehole without taking core.
Industry:Mining
Drilling a conical hole (pit) in one end of a workpiece.
Industry:Mining
Drilling boreholes by the rotary, diamond, percussive, or any other method of drilling for geologic information or in search of a mineral deposit.
Industry:Mining
Drilling done by a company on its property using its own equipment operated by personnel working for the company.
Industry:Mining
Drilling done in dense and solid igneous or highly silicified rocks, which can be penetrated economically only by diamond bits, as opposed to that done in softer rocks easily cut by roller or wing-type rotary bits.
Industry:Mining
Drilling done primarily to obtain information from which the geology of the formations penetrated can be determined.
Industry:Mining
Drilling done specif. to obtain detailed information delineating the location of folds, domes, faults, and other subsurface structural features undiscernible by studying strata exposed at the surface. Compare: structure drilling
Industry:Mining