Highwall Mining E tend Mine

DEPARTMENT OF LABOR MINE SAFETY AND HEALTH …

Green Hill Mining's intent was to auger mine through the existing auger entries of the coal seam. Partin was employed by Green Hill Mining at the time of the accident. Alden Resources conducted pit preparation and highwall scaling as mining advanced for areas to be auger mined. Mining Sequence The mining of the Jellico coal seam at this location in Pit #1 was conducted in a right to left ...

Mining - Wikipedia

Mining is the extraction of valuable minerals or other geological materials from the earth, usually from an orebody, lode, vein, seam, reef or placer deposit.

Contour Highwall Mining

The company has been highwall mining since 2000. CMH is affiliated with Bundy Auger Mining, Inc. which was started in 1985 and removes coal by the auger method under independent contract mining agreements.. The company also leases the machines to affiliated companies who operate and highwall mine under contract coal in West ia and Kentucky. Highwall Mining Solutions and Repair, …

Highwall Mining - Srwk 1 - YouTube

2014-05-18· The Science Behind Magnets: How do they Work? - Stuff to Blow Your Kids' Mind #2 - Duration: 4:46. Stuff to Blow Your Mind - HowStuffWorks 524,631 views

Selective highwall mining at the Dome Open Pit mine

Selective highwall mining at the Dome Open Pit mine J.G. Henning Porcupine Gold Mines, South Porcupine, Ontario, Canada ABSTRACT: Following completion of planned mining operations at the Goldcorp Dome Open Pit Mine, a high-grade Shaft Pillar located in the pit highwall was recovered. Mining of this Shaft pillar faced numerous rock engineering design and implementation challenges …

A Review of Highwall Mining Experience and Practice

In the 1940s, highwall mining method originated in the USA to mine additional coal from outcrops in contour mining, as a type of auger system. The first auger system excavated a single hole of 1.5 m in

MODERN MINING TECHNOLOGY FOR COAL EXTRACTION - e …

Terms involved in highwall mining FRONT VIEW Web pillar Web cut Barrier pillar Web pillar –is the pillar left adjacent to highwall miner cut to support highwall

Highwall Mining Extend Mine-able Reserves - sacea.org.za

Mining Coal from 1. a visible, horizontal or inclined coal seam, making 2. rectangular, parallel, unsupported entries, with 3. unmanned cutter head and coal transport system, which

Highwall mining: practical estimates of coal-seam …

Highwall ruining was introduced into Australian coalmining operations in 1994; it consists in driving a series of unsupported tunnels or roadways into the coal seam from the bottom of an open-pit ...

Ground Control Design For Highwall Mining

GROUND CONTROL DESIGN FOR HIGHWALL MINING R. Karl Zipf, Jr., NIOSH, Pittsburgh, PA Abstract Highwall mining is an important surface coal mining

Program Policy Letter - Mine Safety and Health …

Portable auger and highwall coal mining operations are subject to requirements applicable to mine operators. Pursuant to Title 30, Code of Federal Regulations (30 C.F.R.), Part 41, Notification of Legal Identity, each mine operator must file a legal identity report and notify the Mine Safety and Health Administration (MSHA) of any changes in operational status.

Innovative Solutions for Slope Instability and Rockfall ...

Innovative Solutions for Slope Instability and Rockfall Hazards By Trevor Ames, P. Eng. GeoStabilization International – GSI There are several geological hazards that are encountered during the life of quarry or open pit minea .

Coal Mining and the Highwall Method | OilPrice.com

Highwall miners of this type can advance much further into the highwall than augers, and machines are available that can mine in as far as 1,600 ft, achieving production levels (in Appalachia) of ...

A geotechnical rationale for the design of South African ...

A geotechnical rationale for the design of South African open cast coal mine highwalls by R.J. Butcher* Synopsis Open cast mining has been practiced in South Africa since the late 1970s under near ideal geotechnical conditions. In the past decade, with the exhaustion of the traditional South African coal fields, geotechnical conditions have deteriorated. In addition, the nature of the open ...

Coal mining - Choosing a mining method | Britannica.com

Coal mining - Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining. Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam ...

Arch Coal, Inc. | Community: Education

Highwall – The unexcavated face of exposed overburden and coal in a surface mine or in a face or bank on the uphill side of a contour mine excavation. Highwall miner – A highwall mining system consists of a remotely controlled continuous miner which extracts coal and conveys it via augers, belt or chain conveyors to the outside.

A study of highwall mining panel stability - ScienceDirect

Investigation and design for Pit 20D Upper for highwall mining operations at Moura Mine, Qld, Prepared for BHP Coal Pty Ltd, Moura Mine, CSIRO Exploration and Mining Report 605C, 1999 (Confidential, but released by BHP Coal Pty Ltd in May, 2000, for general publication).

Highwall Miners - Highwall Mining, Superior Highwall Miners

Commonwealth Mining LLC is a Highwall Mining Services Co. that has Operated Highwall Miners in Ohio, West ia, Kentucky, Alabama and ia. We have provided consulting for Highwall Mining Operations in Australia and India as well as currently providing consulting services to Highwall Mining Companies throughout the United States.

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. In the United Kingdom and South Africa, a coal mine and its structures are a colliery, a coal mine a pit, and the ...

Dysart Mining Project Highwall Mining Pillar and ...

Whilst final mining systems have yet to be determined, highwall entries will be a nominal 3m in width, unsupported, and extend to a maximum depth of 300m or to the limit of mining …

Highwall Miner - Kentucky Coal Education

Highwall Miner ( 1 ) ( 2 ) The machine is generally operated from a bench that is created by the removal of overburden material and coal by way of contour surface mining around the perimeter of a coal seam.

Highwall concerns | Pit & Quarry

As mining advances and mine design standards undergo operational changes, it is crucial any geotechnical assumptions be reviewed and modified by an experienced engineer or geologist to continuously ensure the integrity of the final highwall design and reduce the likelihood of highwall instability and rock-fall hazards.

Highwall Mining - RitchieWiki

Highwall mining is a method of mining that originated from auger mining. The method differs in that continuous miners, rather than augers, are used to bore an entry adjacent to the coal seam of a highwall left behind in an open pit mine after excavation has been completed.

Application of Highwall Mining System to Recover …

At open pit coal mines, a large amount of coal is left around the end-walls due to the stability of slope, mining boundary, and so on. In order to increase coal recovery of open pit coal mines,the application of a highwall mining system for residual coal around the end-walls is proposed.

Surface Mining Methods and Equipment

Highwall mining is a coal mining method for recovery of outcropped coal by mechanical excavation without removal of overburden. A continuous miner with single or multiple augers/cutting heads is operated underground and controlled remotely by crew located outside. Augering can be regarded as a supplementary method for open cast mining in cases when coal seams in the highwall would …

Highwall Mining: Design Methodology, Safety and Suitability

As semi-underground and semi-surface mining methods, the auger and highwall mining methods are used to extract the remaining coal reserve after the economic threshold imposed by the stripping ...

Surface mining - Wikipedia

Surface mining, including strip mining, open-pit mining and mountaintop removal mining, is a broad category of mining in which soil and rock overlying the mineral deposit (the overburden) are removed, in contrast to underground mining, in which the overlying rock is left in place, and the mineral is removed through shafts or tunnels.

DEPARTMENT OF LABOR MINE SAFETY AND HEALTH …

accident, the highwall mining machine was operating at the Pocahontas Highwall Mine property (MSHA ID 4609096) in the Pocahontas No. 5 coal seam, …