stripping ratio in coal mining

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Overburden Removal Surface Mining SlideShare

Jul 21, 2017· Overburden Removal Surface Mining. Its pumping aspect is often incor porated as a transport tool as well, aside from discharging excavated material back to the pond. One of the best ex amples of a dredge and slurry pipeline transport is the ov erburden stripping at the Caland mine. The ore body was under 30 m...

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Underground Surface Coal Mines: Is Deep Drilling ...

Trucks and shovels are used to remove excess fragments as a drill systematically bores into the mine, stripping it of coal, typically recovering a higher proportion of the coal deposits than underground mining. Strip mining is sensible when the ore body is near the surface.

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strip ratio in coal mining Mine Equipments

Through GS Coal Pty Ltd, a jointly controlled entity owned 50:50 by ... by its low :1 lifeofmine strip ratio and the ability to bypass 90% of coal ... Mining Exxaro The waste stripping that is required to maintain this coal production is approximately 20Mtpa, which results in a waste to coal mining ratio of approximately : 1 ...

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CORNERSTONE VOLUME 3 ISSUE 4 THE OFFICIAL JOURNAL .

Each coal mine has a limited life span due to the finite nature of the resource being extracted. Eventually the resource is exhausted, or the point is reached at which it is no longer prof itable to extract for any number of reasons, such as increasing mine depth, increasing strip ratios, changing regulations, or market pressures.

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break even stripping ratio example for coal mining

In strip coal mining operations, the following are sometimes seen Breakeven stripping ratio The instantaneous stripping ratio at the point where . For open pit mining the costs are /ton ore and a stripping cost of /ton of waste.

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Cline Mining Mining Company

Most probably, mining business is the last thing that will come to your mind. You might have considered it even at this moment. But there are instances in which real money is in businesses wherein no one is paying attention to. Opening a mining company does not always require you extensive capital. There are so many available opportunities in ...

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PROVISIONAL COAL STATISTICS Ministry of Coal

Overall stripping ratio for the year 201314 was (Stripping ratio is defined as the ratio of Over Burden Removal to Coal produced in Open Cast mining.) OBR means the quantity of over burden

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chidliak: Strip Ratio

Strip itself is easily understood in coal mining where you may have 20 metres of overburden before you expose a 2 metre coal seam. In this case, it is a simple to just divide the length of the overburden by the length of the coal seam (20/2 = 10:1 strip ratio) That is coal mining or strip mining at its core.

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Bengal finds a coal mine unviable

"Kasta (east) is a difficult coal block to mine. The stripping ratio for the mine is very high and the area is densely populated. Lifting coal from the block is costly and it is more suitable for underground mining. The block may be surrendered but no decision has been taken," said Amalesh Kumar, director (mining) of WBPDCL. Other blocks

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stripping ratio mined

Stripping Ratio Truck Mining Scribd. This value is the stripping ratio at which the costs of mining and processing the ore and stripping the waste are equal to the revenue from the Establishment of the pit limits is the first stage in mine planning (Laurich 1990). Get Price.

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What are the types of coal mining methods? Quora

Dec 29, 2016· Open pit mining relatively more easy and cheaper than underground mining. But as long stripping ratio is economically profitable, underground or surface mining is applicable. Work safety is more strict on underground mining, on the other hand it's less draw enviromental impact.

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Surface mining planning and design of open pit mining

Jan 09, 2016· Surface mining planning and design of open pit mining 1. This material is intended for use in lectures, presentations and as handouts to students, and is provided in Power point format so as to allow customization for the individual needs of course instructors. Permission of the author and publisher is required for any other usage.

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ITMG seeks to reduce stripping ratio amid weak coal price

ITMG seeks to reduce stripping ratio amid weak coal price Thursday, September 5 2019 08:03AM WIB By Tri Subhki R IDXlisted integrated coal mining company PT Indo Tambangraya Megah Tbk ITMG is ...

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what is stripping ratio coal mining

what is stripping ratio coal mining, mining strip ratio sharesguru. Quarry Equipment. Rock strip ratio sharesguru australian shares forum, the strip ratio is the number of cubic metres of dirt and rock you need to remove to obtain a every tonne of ore (usually coal when it is mined with draglines or.

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"Giant Shovel on I70"Ohio Strip Mine Fight: 1973 | The ...

May 31, 2017· Generally it is economic to strip mine when there is a 20:1 ratio of overburdentocoal seam, meaning, for example that a threefoot coal seam can be surface mined economically when the overburden is up to 60 feet.

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Analysis of Highwall Mining Stability The Effect of ...

HWM has become a widelyapplied method in surface mining, commonly used alone or in conjunction with contour or slot mining. It provides 800 feet to 1,200feet of additional recovery when the economic stripping ratio is reached in contour mining or in slot mining when surface access to a reserve is limited.

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Revuboè Coal Mine, Tete Mining Technology | Mining News ...

The initial operations will be performed at Chipanga seam with the aim to achieve higher coal recovery with a lower strip ratio. The coal handling and processing plant at the mine will have a processing capacity of 24,000t per hour. It is estimated to process approximately 17 .

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Coal Mining Flashcards | Quizlet

contour strip mining. Form of surface mining used on hilly or mountainous terrain. A power shovel cuts a series of terraces into the side of a hill. An earthmover removes the overburden, and a power shovel extracts the coal, with the overburden from each new terrace dumped onto the one below.

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IDENTIFIKASI PENYEBARAN DAN ANALISIS STRIPPING .

identify the distribution of coal seam and to analysis the stripping ratio from the coal reserves counted as reference in the coal mining exploration using the same methode. This research used secondary data which is well log data and softwares wellcad 4 and rockworks .

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