How do we mine coal - Open cut processes - …
19.02.2018 · Find out how coal is mined by the open-cut process. This is a short video describing the steps involved, from the loosening of the soil and rock above the coal by blasting with explosives to the...
What is open-cut mining? - Oresome Resources
Open-cut mining is one method used to extract these minerals from the earth. Open-cut mining is used when the minerals are found over a large area and relatively close to the surface. The open cut mine is dug downwards in benches or steps which slope towards the centre of the pit. To uncover the minerals the land is first cleared of vegetation as
Mining Basics Open Cut Coal - entdeck-costarica.de
Mining Basics Open Cut Coal. We are a large-scale manufacturer specializing in producing various mining machines including different types of sand and gravel equipment, milling equipment, mineral processing equipment and building materials equipment. And they are mainly used to crush coarse minerals like gold and copper ore, metals like steel and iron, glass, coal, asphalt, gravel, concrete ...
Mining Basics Open Cut Coal - …
Open cut mining methods strip mining Large-scale open cut coal mining operations commenced in Australia in mid 1960s and since then there has been significan t developments in this method of mining. The mines are now operating at significantly higher …
How do we mine coal? (Open-cut processes) - …
Shows examples of the technology used in open-cut mining; Includes footage of the Bowen Basin in Queensland, the location of one of the largest coal deposits in the world; Allows the video to be downloaded as a Flash video file. Key learning objectives. Students describe the processes used to construct an open-cut coal mine and extract the coal.
Open Cut and Underground Mining | iMINCO
01.02.2013 · When minerals and deposits are found close to the surface and spread across a large distance, the best way to mine is to use the open cut mining method. In this process, the area is cleared of all topsoil and vegetation, this material is stockpiled and used later when rehabilitating the area once mining is finished.
Coal Exploration and Mining Geology
Open-cut Mining 8.1 Open-cut Mine Design 8.2 Geological investigations for open-cut mines 8.3 Open-cut Geological Techniques 9. Underground Mining 9.1 Underground Mining Methods 9.2 Geology in Underground Mining 9.3 Stress and Deformation around Mine Openings 9.4 Gas in Coal Seams 9.5 Subsidence over Mine Workings 9.6 Geological Techniques for Underground Mining …
How we operate – Whitehaven Coal
Open cut and underground mining Our cost-efficient mining delivers a sustainable supply of high-quality thermal and metallurgical coal. W e produce high quality coal u sing open-cut mining methods at Maules Creek, Tarrawonga , and Werris Creek, and underground mining methods at Narrabri.
open cut coal methods - henebiens-meubelen.nl
When coal seams are near the surface, it may be economical to extract the coal using open cut (also referred to as open cast, open pit, mountaintop removal or strip.... A new mining method
Surface Coal Mining Methods in Australia
Large-scale open cut coal mining operations commenced in Australia in mid 1960s and since then there has been significan t developments in this method of mining. The mines are now operating at significantly higher annual tonnages, growing deeper, more complex and operating at higher stripping ratios (Westcott et al., 2009).
Underground Mining Methods and Equipment
to remain open during operation, but the opening required to be held open to prevent caving or surface subsidence. In other words, the supported class is employed when the other two categories of methods, unsupported and caving, are not applicable. The supported class of mining methods is intended for application under ground conditions ranging in competency from moderate to incompetent. In ...
(PDF) COAL MINING METHODS - ResearchGate
accumulated after this method of mining is com paratively very high to open pit mining. 6.2 Area strip mining : Strip mining exposes coal by rem oving earth above each coal seam.
Major Mines & Projects | Mt Arthur Mine
Mining Methods. Truck & Shovel / Loader; Summary: Mount Arthur Coal Mine is an open-cut coal mine first owned by Coal Operations Australia Ltd, and then by Hunter Valley Energy Coal Pty Ltd (HVEC), both wholly owned subsidiaries of BHP Billiton. The mine is 8 km south of Muswellbrook in the Upper Hunter Valley. It consists of two areas: the northern open-cut (formerly known as Mount Arthur ...
Types of Underground Mining Method …
Table of ContentsFactors Affecting Choice of MethodReview of Stoping MethodsUnderhand Stoping Mining MethodOverhand Stoping MethodLongitudinal Back, Flat-Back Mining MethodLong-Wall StopingmMining MethodRill-Cut Stoping MiningSaw-Tooth Back StopingShrinkage StopingMining by Combination StopingSide StopingBreast StopingSublevel StopingSquare-Set StopingFilling MethodsCaving Methods …
Coal mining - Choosing a mining method | …
Open-pit mining. In open-pit mining of the coal seam, several benches are established in both the overburden strata and the coal seam. The open-pit method is generally practiced where thick coal seams are overlain by thick or thin overburden; it is also used for mining steeply pitching coal seams. In the beginning stages of mining, considerable volumes of overburden materials must be …
Open Cut or Underground Mining – Which is …
21.10.2017 · There are two major methods of mining: open-cut and underground. Mining has changed and evolved tremendously since its first iterations. Technological advances have improved efficiency, created a safer workplace and minimising the environmental impact. Both open-cut and underground mining is used in modern mining.
Opencast Mining - an overview | ScienceDirect …
Coal mining by open-cut methods. A dragline is used to remove overburden from a gently dipping coal seam, placing it in spoil piles on the up-dip side (left). A pattern of blast holes has been drilled into the overburden on the right of the image. The coal is removed by a power shovel and placed into trucks for haulage from the mine. (Photo: C. R. Ward.) Because of the cost of removing ...
Digging deeper: Mining methods explained | …
Open-pit mining. Open-pit is one of the most common mining methods used and starts from the earths surface, maintaining exposure to the surface throughout the extraction period. The excavation usually has stepped sides to ensure the safety of the miners and a wide ramp where equipment can travel, allowing the product to be removed efficiently from the site. Open-pit mining is practical when ...