Longwall mining is a specialized and efficient form of underground coal mining where a long wall of coal is extracted in a single, continuous operation...

open-cut and longwall mines. Mining at this scale requires the use of draglines, trucks, conveyors, hydraulic jacks, and shearers. The coal mining industry...

techniques also differ greatly from those of surface mining. Longwall mining – A set of longwall mining equipment consists of a coal shearer mounted on a...

reach to the surface. However, roof falls in mining are not all accidental. In longwall mining and retreat mining, miners systematically remove all support...

and pillar mining cannot compete in terms of profitability with many modern, more mechanized types of mining such as longwall or surface mining.[citation...

mainly uses the room and pillar method of mining with a continuous miner. Sasol successfully used the longwall mining method from 1967 to 1987. Today, Sasol...

pulling out pit props, used particularly when collapsing the roof during longwall mining. Timberman A timberman cut, shaped and set pit props. Trapper A trapper...

arms which can be used to dig a tunnel in virtually any shape. Longwall mining, a coal-mining method using a series of hydraulic shields Becket, Derrick (1980)...

Mining is the extraction of valuable geological materials and minerals from the surface of the Earth. Mining is required to obtain most materials that...

shearer cuts a 1.2-meter to 6.5-meter swath of material on each pass of longwall mining and simultaneously loads the material onto a conveyor belt. Powered...

Brazil and Europe via the Goonyella railway line to Hay Point. The longwall mining operations at the mine began in 1998. Extraction occurs roughly 200 metres...

using common underground mining techniques such as bore, drum, and longwall mining in a fashion very similar to coal mining.[citation needed] It is also...

has an influence on the mining method for example a narrow horizontal vein orebody will be mined by room and pillar or a longwall method whereas a vertical...

Mine where a collapse in August 2007 trapped six miners. Longwall mining Mountaintop removal mining Hydraulic fracturing Directional drilling Mark, Chris...

electricity generation. In 2005, Cline Group built its Williamson longwall mining operation south of West Frankfort, Illinois. The company SNL Financial...

changing mining industry patterns in the European Union. The stoping methods used in the mine have varied over time: During the 1950s the longwall method...

horizontal, various forms of room and pillar stoping, cut and fill, or longwall mining can take place. In steeply-dipping ore bodies, such as lodes of tin...

sub-surface mining, and specifically methods which intentionally cause the extracted void to collapse (such as pillar extraction, longwall mining and any...

in mechanization (such as longwall mining) and competition from oil and natural gas led to a decline in the region's mining operations. Environmental...

«China National Coal Group Corp. (CME)» at the mine «Tang Shan Gou» (longwall mining, shearers, three lava, depth 200 m), and at the mine «Nan Liang» (one...

underground, leaving a hole called a stope Room and pillar Longwall mining Retreat mining Fire-setting, a method used in stoping by setting fires to timber...

Broadmeadow Mine BMA's newest punch longwall underground operation on the Goonyella Riverside lease, commenced longwall mining in August 2005. Broadmeadow Mine...

depth, and the difficulties in providing continuous roof support as on longwall coal mines due to the violence of a face blast in the hard rock of the...

called Sesser Mine, operated from 1905-1923. Subsidence resulting from longwall mining at the Old Ben No. 21 mine, by Old Ben Coal Company, was a concern...

Wall of Vietnam, between northern and southern Vietnam Longwall mining, an underground mining technique Grand Wall Great Wall (disambiguation) This disambiguation...

coal-mining company based in Singleton, New South Wales, Australia. The company operates two mines Bulga Surface Operations and Beltana Longwall Mining which...

feet thick, was always worked using longwall mining, while the lower vein was always mined using room and pillar mining. In 1912, United Mine Workers Local...

C.; Hargrave, C.O.; Reid, D.C.; Hainsworth, D.W. (December 2008). "Longwall Mining Automation. An Application of Minimum-Variance Smoothing". IEEE Control...

as an authority in his field, he embarked on global travels to observe mining operations and share his expertise. He later built a movie studio in Florida...

reconstruction, coal was extracted by longwall mining using coal-cutting machinery and conveyors. This type of mining creates a void or goaf into which the...