- Industry: 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 special tube that acts as a borehole seal in the water infusion process. The tube has two separate passages: one for the infusion water and one for admitting hydraulic fluid, which actuates a piston, expanding the seal in the borehole. The infusion water is supplied by a power pump and the hydraulic fluid is supplied by a hand pump.
Industry:Mining
A special tube that acts as a borehole seal in the water infusion process. The tube has two separate passages: one for the infusion water and one for admitting hydraulic fluid, which actuates a piston, expanding the seal in the borehole. The infusion water is supplied by a power pump and the hydraulic fluid is supplied by a hand pump.
Industry:Mining
A special type of continuous miner. It consists essentially of a large diameter screw drill that cuts, transports, and loads coal onto vehicles or conveyors. The coal auger is used for (1) winning opencast coal without stripping overburden; (2) pillar-and-stall mining; and (3) extraction of pillars or percentage of pillars that would otherwise be uneconomic to work.
Industry:Mining
A special type of dry-grinding machine in which micronized mica is produced. It consists of a disintegrator that has no moving parts but depends on jets of high-pressure superheated steam for reducing the mica to micrometer sizes.
Industry:Mining
A special type of geologic map that represents only actual outcrops. Areas without exposures are left blank.
Industry:Mining
A special type of packing to protect explosives from deteriorating when subjected to hot, humid atmospheric conditions, such as in tropical areas. The explosives, after being sealed with paraffin, are packed in cartons, which are then wrapped in waxed paper and also sealed with paraffin. The filled cartons are then placed inside a satchel-type case liner of bitumen-laminated paper reinforced with sisal fiber and completely sealed with a waterproof adhesive.
Industry:Mining
A special type of water barrel for removing water from a shaft sinking. By means of a hose connection to an air pump at the surface, a partial vacuum is created inside the barrel and the water lifts the valve and fills the barrel. The hose is then detached and the barrel is hoisted to the surface and discharged.
Industry:Mining
A special type of water barrel for removing water from a shaft sinking. By means of a hose connection to an air pump at the surface, a partial vacuum is created inside the barrel and the water lifts the valve and fills the barrel. The hose is then detached and the barrel is hoisted to the surface and discharged.
Industry:Mining
A special, hollow, refractory shape used at the base of the guide tubes in the bottom pouring of molten steel. The center brick has a hole in its upper face, and this is connected via the hollow center of the brick to holes in the faces (often six in number). The center brick distributes molten steel from the trumpet assembly to the lines of runner bricks. It is also sometimes known as a crown brick or spider.
Industry:Mining
A special, self-propelled geophysical vehicle designated to operate over marsh or extremely soft ground, usually having wheels with very wide tread or buoyant wheels that will float the vehicle in water.
Industry:Mining
