coal mining stripping ratio

Stripping ratio - Wikipedia

In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material) required to be handled in order to extract some tonnage of.

Stripping Ratios: What are They and Why are They Important? | INN

Apr 9, 2018 . Stripping ratios aren't often discussed, but they can be an early and important indicator for mining projects. Here's what investors should know.

Stripping ratio | mining | Britannica

In coal mining: Choosing a mining method …calculated with the aid of stripping ratios, which represent the amount of waste material that must be removed to.

Rational economic stripping ratios

ABSTRACT: The economic stripping ratio used to define an economic mining block in an open pit coal mining situation is rationalised by considering the time.

Surface Strip Coal Mining Handbook - sacea

Introduction. This handbook on surface strip coal mining serves as a general introduction to the subject of .. 1.3 PRODUCTION COST AND STRIPPING RATIO.

1 4 Stripping Ratio | Ratio | Surface Mining - Scribd

The various stripping ratios that are used in surface mining are the following: 1. 2. 3. 4. 5. 6. 7. . Break even stripping ratio (BESR) In case of coal deposits,.

coal mining stripping ratio,

Stripping Ratios: What are They and Why are They Important? | INN

Apr 9, 2018 . Stripping ratios aren't often discussed, but they can be an early and important indicator for mining projects. Here's what investors should know.

Stripping ratio | mining | Britannica

In coal mining: Choosing a mining method …calculated with the aid of stripping ratios, which represent the amount of waste material that must be removed to.

Rational economic stripping ratios

ABSTRACT: The economic stripping ratio used to define an economic mining block in an open pit coal mining situation is rationalised by considering the time.

Determining Stripping Ratio - Basic Mining Techniques

Apr 4, 2016 . Stripping ratio simply refers to the amount of waste handled in order to recover certain amount of ore.

Stripping ratio and pit limit - Basic Mining Techniques

Jul 26, 2017 . Stripping ratio is expressed broadly as the ratio of waste to ore. It's simply . Usually for coal, cubic meters (m3) or tonnes (t) are used. However.

Economic Surface Mining of Multiple Seams - SAIMM

making in connection with multiple--seam mining becoll1CS more difficult. . used refers to coal mining. .. 'Stripping ratio' as used here in reference to coal.

Coal Mining Terms - Cline Mining Corporation

Raw coal mined in open pits is often tumbled in large rotary screens where . The clean coal stripping ratio is more indicative of a mine's performance as it.

coal mining stripping ratio,

Calculating Stripping Ratios for Area Strip Mines Mnge ppt video .

Stripping Ratio as a Fundamental Ability to surface mine depends on the value of the . Stripping Ratio determines relative amounts of each to be moved If coal.

Production stripping costs - KPMG

Oct 19, 2011 . average life-of-mine stripping ratio approach, while others expense such .. that may not be embedded in an ore deposit, for example coal.

Indonesian coal producers cut costs to sustain profits as prices fall .

Oct 29, 2014 . Indonesian coal miner Berau Coal said it had been able to negotiate a . coal miners were also continuing to lower their mine stripping ratios.

Mine 2

Productivity varies widely among coal mining operations in Illinois. In 1973 productivity . tional factors of stripping ratio and method of mining were considered.

Overburden Removal - Surface Mining - SlideShare

Jul 21, 2017 . For example, it is quite different in the coal industry where it refers to the cubic . However, in hard rock mining to define the stripping ratio in the.

Surface Mining Methods

Mar 13, 2011 . Stripping ratios of 2:1 up to 4:1 are not uncommon in large mining . Coal is the most common commodity that is strip mined from surface seams.

Chapter 2: The Environmental Effects of Strip Mining - The Strip .

This section describes the five main types of surface coal mining techniques: area . ratio between the overburden and the coal seam, called the stripping ratio,.

Surface Mining Techniques used in the Oil Sands | Oil Sands .

May 1, 2016 . Strip mining is the mining of a relatively flat deposit very close to the surface, commonly used in coal or phosphate industries. .. Strip ratio is the fraction of overburden (or waste ore) versus the weight of bitumen-rich oil sands.

IFRS Developments for Mining & Metals: Accounting for waste . - EY

accounting for waste removal costs - IFRIC Interpretation 20 – Stripping Costs in the .. differs from the life-of-mine average strip ratio approach, which is widely.

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With regard to the stripping of coal and other products using draglines, .. 3.b) How have mine productivity, maintenance of stripping ratios, grade control and.

ANGLO AMERICAN METALLURGICAL COAL

Jun 14, 2012 . Coal Inventory: Occurrence of coal of economic interest which forms the physical envelope that encompasses a Coal ... Mining strip ratio 9:1.

Rio Tinto Investor Seminar, London - 11 December 2013

Dec 11, 2013 . thermal coal mine for just over a billion dollars. All of these .. During 2017, the strip ratio is expected to drop further, to below 1:1. The first high.