Longwall Mining Scrutiny
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Longwall Mining Scrutiny

New scrutiny of 'longwall' mining finds damage in ...

2013-6-22  The state scrutiny targets streams that include a once-gushing waterway cutting across Kim Jones’ 62-acre farm in Wind Ridge, in the bottom corner of western Pennsylvania. In 2004, when the tributary first fell victim to longwall mining, Jones predicted it would never return.

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New scrutiny of 'longwall' mining finds damage in ...

2013-6-25  Anti-longwall activists believe the rulings could impact future longwall mining activities in Pennsylvania and beyond. Currently, Consol is applying for a permit revision to expand its largest operation, Bailey Mine, by 3,135 acres, which would mean

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LONGWALL MINING FOR CLEAN - idc-online

2019-2-4  LONGWALL MINING FOR CLEAN COAL ‘PERMANENTLY’ DAMAGED 6 STREAMS IN PENNSYLVANIA New scrutiny of „longwall‟ mining finds damage in Pennsylvania streams [longwall mining machine] 19 maj 2011, Deutsches Bergbaumuseum, Bochum. photo: Helen Simonsson The brutally efficient coal-extraction method known as “longwall mining” has

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Hydrogeological Response to Longwall Mining - ACARP

The Australian coal mining industry is facing intense public and political scrutiny and hence is required to operate with unprecedented environmental accountability. The absence of robust and reliable analysis tools may significantly affect the industry's ability to gain mining approval and licenses, where significant aquifers, surface water or ...

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The big seep – Center for Public Integrity

2009-1-13  Longwall Mining New scrutiny of ‘longwall’ mining finds damage in Pennsylvania streams. Read On this January morning in 2008, it radiates from the heart of Pennsylvania “coal country,” in northern Appalachia, where the mining industry reigns. It originates 600 to 1,000 feet below ground, about three miles into the second largest ...

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Longwall mining - Global Energy Monitor

2021-11-18  Longwall mining is a form of underground coal mining where a long wall of coal is mined in a single slice (typically 1-2 m thick). The longwall "panel" (the block of coal that is being mined) is typically 3-4 km long and 250-400 m wide. Longwall mining produced 176 million tons of coal in 2007, about 15 percent of total U.S. production.

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Measurement of Longwall Mining Induced Strata

2014-2-14  Longwall mining induces rock deformation, delamination, intensive fractures and breakages of the overlying strata and as such may interfere with the groundwater regime operating in the mine region. In addition to the site specific hydraulic characteristics mining induced strata deformation and associated fracturing will dictate the extent of ...

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Shift Miner Mining CSG Jobs News Events

2020-6-14  "The suspension of longwall mining over time elevates the risk of spontaneous combustion, due to the oxidation of the coal in the longwall goaf environment, during normal longwall mining operations, this risk is very low," they said on Monday.

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Roof supports under scrutiny - MiningMonthly

2003-5-12  Roof supports under scrutiny A RESEARCH project being undertaken at Brisbane-based research centre JKMRC aims to predict optimal roof support capacity for longwall mining operation needs. Michael Callan. Future Of Mining > Innovation; 12 May 2003 comments; share. Staff Reporter. 80Ghz Radar level transmitter technology ...

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University of Wollongong Research Online

2020-7-2  mining on river valleys have come under scrutiny, especially when mining is located underneath catchment areas. As public awareness of mining impacts on the environment increases, there is the need to develop damage mitigation strategies. Results of numerical modelling show that river valley response to underground longwall mining can be ...

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New scrutiny of 'longwall' mining finds damage in ...

2013-6-25  Anti-longwall activists believe the rulings could impact future longwall mining activities in Pennsylvania and beyond. Currently, Consol is applying for a permit revision to expand its largest operation, Bailey Mine, by 3,135 acres, which would mean

More

Roof supports under scrutiny - MiningMonthly

2003-5-12  Roof supports under scrutiny A RESEARCH project being undertaken at Brisbane-based research centre JKMRC aims to predict optimal roof support capacity for longwall mining operation needs. Michael Callan. Future Of Mining > Innovation; 12 May 2003 comments; share. Staff Reporter. 80Ghz Radar level transmitter technology ...

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Hard roof management - A key for high productivity in ...

A careful scrutiny of experience gained from the mechanised longwall mining in Indian coal industry reveals coal seams are overlain by hard and massive sandstone rock beds within the active caving ...

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Shift Miner Mining CSG Jobs News Events

2020-6-14  "The suspension of longwall mining over time elevates the risk of spontaneous combustion, due to the oxidation of the coal in the longwall goaf environment, during normal longwall mining operations, this risk is very low," they said on Monday.

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Numerical Modelling of Undermined River Valleys — A

The effects of underground longwall mining on river valleys have come under scrutiny, especially when mining is located underneath catchment areas. As public awareness of mining impacts on the environment increases, there is the need to develop damage mitigation strategies.

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Water risk ‘needs more sway’ on mining

2017-9-15  The body in charge of the state’s drinking water storage, WaterNSW, has backed calls for greater scrutiny of if and how longwall mining should be allowed under sensitive areas of the catchment.

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iLO K COUPLING - Gates Corporation

2020-2-14  Conditions in a longwall mine play havoc with traditional staple-lock and super-staple-lock couplings. Operating pressures of 5,000 psi in the hydraulic hoses connecting the shields on your longwall miner put 60,000 ft-lbs of force against the fittings. That’s a lot for a staple to withstand. Moreover, hoses and

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MPs support mining under Woronora Dam - St George, NSW

2020-6-12  A debate in State Parliament produced no gain for environmental groups fighting to stop longwall coal mining under Woronora Dam. Government and opposition MPs simply "noted" a

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Contamination concerns over 90km wastewater pipeline in ...

2021-10-15  Lithgow's Centennial plant has always had a problem: what to do with the millions of litres of contaminated wastewater generated by its longwall coal mining operation. Up to 350,000 litres of ...

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Akhilesh Kumar - Dhanbad Area, India Professional ...

Underground and Open cast coal mining, highly gassy, bord and pillar, longwall, coal mines fires, mine ventilation, mine working, mine mechanization, planning and scrutiny of projects and Metalliferous mines (limestone, china clay, iron ore), Safety Audit, Inspections, Inquiries, Examination for grant of statutory certificates for both, etc.

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New scrutiny of 'longwall' mining finds damage in ...

2013-6-25  Anti-longwall activists believe the rulings could impact future longwall mining activities in Pennsylvania and beyond. Currently, Consol is applying for a permit revision to expand its largest operation, Bailey Mine, by 3,135 acres, which would mean

More

Reducing the Impact of Longwall Extraction on ... - ACARP

Longwall mining under or adjacent to surface water, sub-surface aquifers, water reservoirs and flooded workings has been undertaken and is planned at a number of mine sites in Australia. Due to the rock mass deformations associated with longwall mining, unexpected adverse interaction with these water bodies may result if mining is not properly ...

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Assessment of potential impacts to surface and subsurface ...

2017-1-1  1. Introduction. The utilization of high-recovery underground mining methods, such as longwall or high-extraction room-and-pillar operations, has the potential to cause adverse impacts to both surface and subsurface bodies of water as strata movement and deformations propagate from the mined seam through the overburden to the surface .. Previous research has indicated that mining induced ...

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iLO K COUPLING - Gates Corporation

2020-2-14  Conditions in a longwall mine play havoc with traditional staple-lock and super-staple-lock couplings. Operating pressures of 5,000 psi in the hydraulic hoses connecting the shields on your longwall miner put 60,000 ft-lbs of force against the fittings. That’s a lot for a staple to withstand. Moreover, hoses and

More

Reducing the Impact of Longwall Extraction on

Longwall mining under or adjacent to surface water, sub-surface aquifers, water reservoirs and flooded workings has been undertaken and is planned at a number of mine sites in Australia. Due to the rock mass deformations associated with longwall mining, unexpected adverse interaction with

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West Ridge coal mine shuts down longwall operation ...

2009-2-15  The West Ridge mine near Price was operating a longwall mining machine by remote control in the interest of safety but said regulators asked it to stop, disassemble the machinery and skip a section of the coal panel. ... but the company said the Jan. 31 injury that intensified federal scrutiny was caused by a foreman losing his balance and ...

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The Slow Rate of Industrialisation: A Second Look

Coal mining: Recent unpublished work by Kishore Jethanandani at NCAER throws interesting if tentative light on the chequered history of longwall mining in India. The first longwall experiments were begun in 1962; till now, the output of longwall mines barely reaches 1 million tons. The problems were of two kinds. First, longwall mining machinery

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Ulan s fat face - MiningMonthly

2006-4-20  Longwall mining at the Xstrata Coal-owned mine, located near the Hunter Valley town of Mudgee, began in 1986 – open-cut mining had been ongoing since 1982. At a face width of 250m, the mine’s current roof supports were designed for 12,000 cycles but by the time the current panel finishes, it will have completed 49,000 cycles.

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MPs support mining under Woronora Dam - St George, NSW

2020-6-12  A debate in State Parliament produced no gain for environmental groups fighting to stop longwall coal mining under Woronora Dam. Government and opposition MPs simply "noted" a

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Commentary: Legal warning signals from the HD Mining

2013-5-1  HD Mining has countered that it was unable to find local workers who had experience in longwall mining methods. It further warned that if it could not hire the foreign workers, it would not be able to develop the site or provide the many jobs which it anticipates would be available to Canadians once the site is developed.

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