- 업종: 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 ...
A large ram, the surface of which is acted on by liquid in contact with a small ram.
Industry:Mining
A large rectangular block of cast iron used by a blacksmith. It is pierced through with numerous holes, both round and square in section, for the reception of work that requires shouldering.
Industry:Mining
A large roll for the preliminary crushing of large pieces of ore, rock, or coal. Used in stage crushing.
Industry:Mining
A large rope, varying from 5 to 24 in (12.7 to 61.0 cm) in circumference, of 6 to 9 strands and left-handed twist.
Industry:Mining
A large shake is one that exceeds one-third the width of the mine track tie. A shake not exceeding this limitation and that does not extend nearer than 1/2 in (1.3 cm) to any surface shall be permissible.
Industry:Mining
A large structural feature or area that has had a long history of progressive uplift; also, in a relative sense, one that has been stable or has subsided much less than neighboring negative elements.
Industry:Mining
A large structural feature or portion of the Earth's crust, characterized through a long period of geologic time by frequent and conspicuous downward movement (subsidence, submergence), extensive erosion, or an uplift that is considerably less rapid or less frequent than those of adjacent positive elements.
Industry:Mining
A large tank, with a filter bottom, in which sands are treated with sodium cyanide solution to dissolve out gold.
Industry:Mining
