- 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 heavy flywheel used in the Ward-Leonard control of winding engines in mine hoists. It is mounted on the shaft of a motor generator, which draws on this source of energy as the hoist starts to move.
Industry:Mining
A heavy green oil that distills from coal tar above 270 degrees C and is the principal source of anthracene, phenanthrene, and carbozole.
Industry:Mining
A heavy hammer, moving between vertical guides, actuated by steam pressure.
Industry:Mining
A heavy iron ball allowed to drop from a height to break up, or crack, hard substances, as aloxite, rock, etc.
Industry:Mining
A heavy liquid used for mineral separation (sp gr, 3.33); also for refractive index determination (R.I.=1.74). Compare: Clerici solution; Sonstadt solution; Klein solution; bromoform.
Industry:Mining
A heavy roller with pneumatic tires used to consolidate embankments.
Industry:Mining
A heavy steel nail of square section that is driven into a wooden sleeper to hold a flanged rail.
Industry:Mining
A heavy steel ring, about 3 in or 4 in (7.6 cm or 10.2 cm) inside diameter, used in withdrawing a bar stuck or frozen in a skull or iron. The ring is placed on the bar, a wedge inserted, and the bar backed out by sledging on the wedge.
Industry:Mining
A heavy steel wedge, 6 in or 8 in (15.2 cm or 20.3 cm) long, with a narrow chisel point for cutting samples or breaking out pieces of loose rock.
Industry:Mining
A heavy tension spring, enclosed in a cylinder, which is connected to the panline of certain types of shaker conveyors to keep the conveyor in tension. It is attached to the conveyor by a driving chain and to a prop by a fixing chain. Keeping the conveyor in tension, it is claimed, will save the conveyor connections and increase the output.
Industry:Mining
