- 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 fixed mooring in the open sea formed of a number of piles, or a guide for ships entering a narrow harbor mouth.
Industry:Mining
A fixed rent stated in leases of coal mines, as distinguished from royalty or share of profits.
Industry:Mining
A fixed work target on the coalface that every collier is expected to do in one shift or a single week. In longwall conveyor work, it is the length, area, or volume of face that the miner regularly clears or loads out.
Industry:Mining
A fixed work target on the coalface that every collier is expected to do in one shift or a single week. In longwall conveyor work, it is the length, area, or volume of face that the miner regularly clears or loads out.
Industry:Mining
A fixed work target on the coalface that every collier is expected to do in one shift or a single week. In longwall conveyor work, it is the length, area, or volume of face that the miner regularly clears or loads out.
Industry:Mining
A flame safety lamp that has been approved for use in gaseous coal mines.
Industry:Mining
A flameproof enclosure for electrical apparatus is one that, under normal working conditions, will withstand the internal explosion of a flammable gas that may exist within it, and which will prevent the transmission of a flame capable of igniting an explosive atmosphere outside the equipment.
Industry:Mining
A flameproof enclosure primarily for use at or near the coalface and designed to line up with similar boxes to form a control board. A gate-end box may contain bus bars, isolators, switches, contactors, transformers, and protective devices, for the control of motors, lighting, and other equipment.
Industry:Mining
A flameproof enclosure primarily for use at or near the coalface and designed to line up with similar boxes to form a control board. A gate-end box may contain bus bars, isolators, switches, contactors, transformers, and protective devices, for the control of motors, lighting, and other equipment.
Industry:Mining
