- 行业: 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 ...
Any error that is wholly due to chance and does not recur; an accidental error. Ant: systematic error.
Industry:Mining
Any error that persists and cannot be considered as due entirely to chance, or an error that follows some definite mathematical or physical law or pattern and that can be compensated, at least partly, by the determination and application of a correction; e.g., an error whose magnitude changes in proportion to known changes in observational conditions, such as an error caused by the effects of temperature or pressure on a measuring instrument or on the object to be measured. Compare: random error
Industry:Mining
Any face, such as the walls of a well or borehole or the sides of a fracture, that traverses a reservoir rock or aquifer, permitting the stored liquid or gas to seep (or to bleed) into the opening.
Industry:Mining
Any fan installed underground to ventilate tunnels or workings where the air current is sluggish.
Industry:Mining
Any feeder that uses magnetism to pick up, hold, separate, and deliver objects.
Industry:Mining
Any fine-grained igneous rock whose components are not distinguishable with the unaided eye; a rock having aphanitic texture. Compare: aphanitic
Industry:Mining
Any foraminifer belonging to the suborder Fusulinina, family Fusulinidae, characterized by a multichambered elongate calcareous microgranular test, commonly resembling the shape of a grain of wheat. Range, Ordovician to Triassic.
Industry:Mining
Any foraminifer belonging to the suborder Fusulinina, family Fusulinidae, characterized by a multichambered elongate calcareous microgranular test, commonly resembling the shape of a grain of wheat. Range, Ordovician to Triassic.
Industry:Mining
Any form of furnace using the natural draft of a chimney without the aid of a bellows or blower.
Industry:Mining
Any fossil that has actual, potential, or supposed value in identifying the age of the strata in which it is found or in indicating the conditions under which it lived; a fossil used esp. as an index or guide in the local correlation of strata. Compare: index fossil
Industry:Mining
