- 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 ...
A longwall face on which the coal is loaded direct onto a face conveyor. The coal may be loaded by hand or mechanically. The face conveyor delivers its load of coal into tubs or cars or onto a gate conveyor.
Industry:Mining
A longwall machine that cuts and loads the coal onto a conveyor as it travels across the face.
Industry:Mining
A longwall method of working coal seams in which the trams run on a rail track along the face and are hand loaded at the sides. It follows that the system can be adopted only in relatively thick seams where the trams can travel along the face without any roof ripping. The method is now replaced by face conveyors.
Industry:Mining
A longwall method of working coal seams in which the trams run on a rail track along the face and are hand loaded at the sides. It follows that the system can be adopted only in relatively thick seams where the trams can travel along the face without any roof ripping. The method is now replaced by face conveyors.
Industry:Mining
A longwall mining technique, most commonly found in European coal mines, where the gate roads are advanced while the longwall face is advanced toward the mining limits. The gate roads are maintained throughout the worked-out portion of the longwall panel.
Industry:Mining
A loose iron box fitted in the bottom of a gulley for collecting deposited silt. It can be removed periodically for emptying and flushing.
Industry:Mining
A loose pulley used to guide a driving belt past an obstruction or to divert its direction.
Industry:Mining
A loose term, usually used to describe the wearing away of furnace linings without a known reason.
Industry:Mining
A loose, coarse-grained pisolitic iron ore; limonite occurring in lenticular aggregations.
Industry:Mining
A loosely applied term for any method for the firing of blasts involving the use of the blasting timer or millisecond-delay caps.
Industry:Mining
