Longwall mining is a form of underground coal mining where a long wall of coal is mined in a single slice (typically 0.6–6.0 m (2 ft 0 in – 19 ft 8 in)...

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...

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

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

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)...

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...

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...

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

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

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

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...

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

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...

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...

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

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...

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...

Mark A. Smith, son of John Smith (born 1936; underground coal miner Longwall mining) and Rita Joyce Smith (1935–2004; housewife), grew up in Wigston Magna...

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...

«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...

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...

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...

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

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

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...

system. NREC has worked with coal mining industry partners to develop operator assistance technology for longwall mining. This includes a complete navigation...

Kembla. In 1955 the mine was renamed Kemira (from Kembla and Keira). Longwall mining was introduced in the 1960s. Peak production was reached in the year...

authority in his field, he traveled around the world advising on various mining operations. He later built a movie studio in Florida and served as an executive...

hazards to coal mining, such as basaltic intrusions (dykes, sills, and volcanic plug) that destroy resources and are dangerous to longwall mining equipment...