Narrabri Mine – Whitehaven Coal

The Narrabri underground coal mine has been operating since 2012 and employs around 500 people, most of whom live in the region. The mine is approved to extract coal at a rate of up to 11 million tonnes of run-of-mine coal per annum until 2031. The Stage 3 Extension Project is a proposal to extract coal to the south of the existing mine.

Longwall Coal Mining in La Salle County, Illinois

There are three Sullivan longwall mining machines and one 5-ton Goodman electric locomotive at the La Salle mine. The gathering of coal is done by ten mules. The capacity of the plant is about 700 tons daily, but 400 tons is the present output. There are 142 inside men at the La Salle mine, 106 being miners or loaders. Machine Longwall Mining

Coal mining - Coal preparation | Britannica

Raw coal of less than 12.5 millimetres is sized into two products: an intermediate product (larger than 0.5 millimetre) and a product smaller than 0.5 millimetre; the intermediate product is cleaned to remove impurities; the smaller product is added to the cleaned intermediate product or marketed separately.

Coal mining | World Coal Association

Longwall mining involves the full extraction of coal from a section of the seam, or ‘face’ using mechanical shearers. The coal ‘face’ can vary in length from 100-350m. Self-advancing, hydraulically-powered supports temporarily hold up the roof while coal is extracted.

WV Coal Facts | WV Office of Miners' Health Safety and

McDowell County has produced more coal than any other county in West Virginia. The West Virginia Coal Industry provides about 30,000 direct jobs in WV, including miners, mine contractors, coal preparation plant employees and mine supply companies. Underground mines in 2009 produced 87 million tons with 33 million tons from longwall mining.

Glossary of Coal Mining Terms - DOL

bituminous coal, lignite, or anthracite from its natural deposits in the earth by any means or method, and the work of preparing the coal so extracted, and includes custom coal preparation facilities. Collar - The term applied to the timbering or concrete around the mouth or top of a shaft. Collar - see Crossbar.

Mine Details |

The longwall panels of the Northern Domain run in a north east-south west direction with the main development located under the F3 Freeway. Long term stable support is provided by coal pillars. Longwall panels at the West Wallsend mine are planned to make the most of coal quality during extraction so that surface subsidence impacts are minimised.

The Most Practical Technology in Coal Preparation Plant

Full Mechanized Coal Mining (longwall) on 78 Degrees Steeply Inclined Coal Seam Technology Share for Underground Loader Remote Control System Used in Metal Mine Things You Need to Know about Remote Control LHD Applied to Non-ferrous Metal Mine

Major Mines & Projects | Enlow Fork Mine

All of mines utilize longwall mining, which is a highly automated underground mining technique that produces large volumes of coal at lower costs compared to other underground mining methods. Generally the company operate five longwalls and 15-17 continuous mining sections at the Pennsylvania mining complex.

Cutting Methods | Longwall | underground COAL

Some Half Web systems can provide similar benefits to Pre-cutting, also described in the Longwall section of the Fundamentals of Coal Mining module, but with additional benefits. Depending on the equipment used and the mine's coal haulage capacity, Bi-di mining is often more productive than Uni-di, especially with longer faces, and can handle ...

Environmental Aspects of Coal Mining and Utilization

EG 144 Mine Subsidence in Illinois: Facts for Homeowners. 1992. EG 150 Laboratory Studies on the Codisposal of Fluidized-Bed Residue and Coal Slurry Solid. 1996. 28p. Illinois Mineral Notes. IMN 94 Coal Recovery from Mine Wastes of the Historic Longwall Mining District of North-central Illinois. 1986. 19p. Open File Series Reports

CDC - Mining - Multiple Seam Longwall Mining in the U.S

The lessons that these mines have learned cover a broad range of topics, including: Whether to stack gateroads or place them under old gob areas; How to size pillars and select artificial support to cross longwall stop lines; How to use yield pillars to minimize multiple seam stresses and coal bump potential, and; When to anticipate the ...

Major Mines & Projects | Illawarra Mine

The Bulli Seam underground longwall mining operations have transitioned wholly to the Appin areas (Area 9 and Area 7) following completion of longwall mining activities at West Cliff in early 2016. The coal seams are extracted via conventional retreat longwall methods with a single longwall currently operating in each mine.

Coal mining - Wikipedia

Coal mining is the process of extracting coal from the ground. Coal is valued for its energy content and since the 1880s, has been widely used to generate electricity. Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production.

Major Mines & Projects | Ulan mine Mine

The Ulan Underground Mine Plan has main headings in the centre of the mine plan with approximately 400m wide longwall panels to the West and East. Development of roadways is completed using continuous miners with shuttle cars and conveyors to remove the coal.

Longwall Mining - SlideShare

Apr 30, 2010 · REASONS FOR POOR PERFORMANCE OF LONGWALL >Coal companies were sensitive to the failures of a few long wall faces and were not prepared to risk huge investments. >Development could not keep pace with the extraction of Long wall panels, slow progress in dip has delayed the formation of Long wall panels and affected the performance. 132.

Major Mines & Projects | Ashton Mine

The Underground Mine utilises the longwall method of coal extraction, following continuous miner development of main headings and twin heading gateroads. Seam thickness varies from about 1.8 m to 2.8 m high. All underground roadways will be driven at approximately 2.6 m mined height.

Dendrobium Mine - South32

The Dendrobium Mine in the Illawarra region of New South Wales is an existing underground mine, primarily producing metallurgical coal for steelmaking. We are seeking approval for the continuation of mining activities in Dendrobium’s next two underground mining areas, within the existing Dendrobium mining …


mining and deep underground mining are the two basic methods of mining used in South Africa. Approximately 51% of South African coal mining is done underground and about 49% is produced by open-cast techniques.


Underground Mining There are two main methods of underground mining: room-and-pillar and longwall mining. In room-and-pillar mining, coal deposits are mined by cutting a network of ‘rooms’ into the coal seam and leaving behind ‘pillars’ of coal to support the roof of the mine. These pillars can be up to 40% of the total coal in the seam –

Longwall or Not? | Longwall | underground COAL

LONGWALL OR NOT? The large majority of coal mines, existing or planned, work with the aim of maximum production at minimum cost and in the majority of cases a correctly designed and well operated longwall installation is the best means of attaining this objective.


The red patterns are used for areas of underground mining that are documented by a primary or ... Depending on the size of rooms and pillars, the amount of coal removed from the production areas will range from 40% to 70%. ... In early (pre-1960) longwall mines, mining advanced in multiple directions from a central shaft (fig. 1G). Large ...

Proposed coal mines in the United States - Global Energy

Colorado: Red Cliff Mine. Red Cliff Mine is a new underground coal mine proposed by Rhino Energy. It is located on federally-managed public lands 11 miles north of the towns of Loma and Mack and 1.5 miles east of State Highway 139, in Mesa County.

Major Mines & Projects | Moolarben Mine

Due to changes in coal quality, longwall mining in UG4 will extract the DWS seam only with up to 3.0m (2.8m to 3.0m) mining height. Longwall panels will range from …

PDF) Geological and geotechnical aspects of underground coal

About one quarter of the coal produced in Australia is by underground mining methods. The most commonly used underground coal mining methods in Australia are longwall, and room and pillar.

Major Mines & Projects | Cook Colliery Mine

The main target for underground mining is the Argo seam (4.7 m thick), which is currently being mined. The depths of the Aries seam (top coal) vary from 110-130 m in the western area to 220-230 m in the eastern area.

Steeply Inclined Seam Longwall Mining Method

Nov 15, 2016 · 1. Introduction of Steeply Inclined Seam Longwall Mining Projects According to the angle size, Chinese coal industry could be divided into the following stype: nearly-horizontal coal seam if the ...

Field study on the load transfer mechanics associated with

The coal seam had an average thickness of 2.3 m and a depth between 368 and 502 m, was sub-horizontal with a dip angle between 2° and 10°. The coal seam was extracted by longwall mining method. The width and length of longwall panel 81,115 were 180

What is Longwall Mining? (with pictures) - wiseGEEK

Dec 21, 2020 · Longwall mining machines are about 800 feet (240 meters) in width and 5 to 10 feet (1.5 to 3 meters) tall. The miners extract "panels" -- rectangular blocks of coal as wide as the mining machinery and as long as 12,000 feet (3,650 meters). Massive shearers cut coal from a wall face, which falls onto a conveyor belt for removal. As the miner advances along a panel, the roof behind the …

Coal Mining Underground & Surface - CTC

Coal Mining Underground & Surface A production miner supervises the crew and machines involved in the physical operation of mining coal. Just as coal is vital to the future of our country, production miners are vital to the future of our coal mining industry.