- 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 ...
An earth dam built of any broken rock or similar material that may be available.
Industry:Mining
An earthen dike forming a depression in which returns from a borehole can be collected and retained.
Industry:Mining
An earthquake that follows a larger earthquake or main shock and originates at or near the focus of the larger earthquake. Generally, major earthquakes are followed by many aftershocks, which decrease in frequency and magnitude with time. Such a series of aftershocks may last many days for small earthquakes or many months for large ones. Compare: foreshock.
Industry:Mining
An earthy black or brown lignite used as a pigment. Etymol. source near Cologne, Germany.
Industry:Mining
An earthy nonphosphatic pyrobitumen composed primarily of water, humic acid, wax (a source of "montan wax"), and silica, associated with brown coal called pyropissitic brown coal.
Industry:Mining
