# What Is Stripping Ratio Coal Mining Ppt

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### Calculating Stripping Ratios For Area Strip Mines

Calculating Stripping Ratios. for Area Strip Mines Mnge 315. Dr. B. C. Paul spring 2003 revised 2010 Note These notes contain information considered common knowledge to those familiar with Strip Mining. Books such as Elements of Practical Coal Mining and SMEs Surface Mining were specifically referenced. Stripping Ratio as a Fundamental Ability to surface mine depends on the value

### Chapter 11 Mining Technology Princeton University

basin which produces Federal coal. Area strip mining proceeds by first making a box cut into the earth to uncover the initial strip of coal that is to be mined. The strip of coal uncovered will vary from 100 to 200 ft in width and from one-quarter to several miles in length. The actual size of the cut will be de-termined by the thickness of ...

### Determining Stripping Ratio Basic Mining Techniques

Apr 04, 2016 The maximum allowable Stripping Ratio SR max defines break even stripping ratio BESR.This represents the highest possible units of waste that can be handled. If the SR exceeds the BESR then the operation will be uneconomical as the income generated by the ore is insufficient to offset the costs incurred in mining.

### Chapter 7 Coal Pennsylvania State University

involved in making such an estimate. The exact quantity of coal resources is not known. We cannot predict what improvements will be made in mining technology that would allow the recovery of more of the coal than is currently achieved. We cannot evaluate with certainty what tolerance coal consumers might have for using coal of lower quality than is

### 2012 Americas School Of Mines

Notes Strip Ratio Mining Methods 27 Mistakes are often made when computing the strip ratio. Its all in the words and you have to watch the flow of material and how it is classified. For example, according to Freeport McMorans 2007 10K filing, the concentrator is capable of processing 75,000 metric tons per day of primary sulfide ore and

### Whats The Average Stripping Ratio Of Open Pit Mines

The stripping ratio in a mine is chosen based on economics. A high grade orebody can support a high stripping ratio. A low grade ore body cannot support a high stripping ratio.

### 11 Phases Of A Mining Project Patagonia Area

1.1.3.1 Open-pit mining Open-pit mining is a type of strip mining in which the ore deposit extends very deep in the ground, necessitating the removal of layer upon layer of overburden and ore. In many cases, logging of trees and clear-cutting or burning of vegetation above the ore deposit may precede removal of the overburden. The

### Financial Reporting In The Mining Industry International

www.pwc.commining Financial reporting in the mining industry International Financial Reporting Standards 6th edition

### Mining Valuation Techniques Pnav Pcf Evresource

NAV is a sum-of-the-parts approach to valuation, in that each individual mining asset is independently valued and then added together. Corporate adjustments are made at the end, such as head office overhead or debt. Below is a screenshot of a NAV model from CFIs Mining Financial Modeling Course. Price to Cash Flow Ratio PCF

### Glossary Of Mining Terms Coal Education

A. Abutment - In coal mining, 1 the weight of the rocks above a narrow roadway is transferred to the solid coal along the sides, which act as abutments of the arch of strata spanning the roadway and 2 the weight of the rocks over a longwall face is transferred to the front abutment, that is, the solid coal ahead of the face and the back abutment, that is, the settled packs behind the face.

### Chapter 2 The Environmental Effects Of Strip Mining The

This section describes the five main types of surface coal mining techniques area mining, open pit mining, contour mining, auger mining, and mountaintop removal. Underground mining is also considered in this section. Terrain, economics, and custom generally dictate which technique an operator chooses.. All surface or strip mining first removes the overlying vegetation, soil and underground ...

### Mining Terms Explained A To Z Anglo American

A glossary of mining terms. Mining explained. Bulk ore sorting and coarse particle recovery leading the way in mineral processing innovation. Mining explained. Digging deeper Mining methods explained. The four concepts underpinning a new way of mining.

### 4 Coal Mining And Processing Coal Research And

Although the United States has the vast coal resource described in the previous chapter, perhaps as much as 4 trillion tons, the key issue for policy makers is the amount of coal that is economically recoverable.This is not a fixed quantity, but depends on the geological resource, the market price, and the cost of mining. The particular characteristics of the coal mining industry create unique ...

### Environment Impact Assessment Of Coal Mining

Coal mining has significant impact on land and land use, some of the land related impact are Loss of biodiversity, Economic loss or loss of livelihood due to ... Overburden generation is denoted by stripping ratio which is the ratio of overburden that needs to be removed to the amount of ore removed. Low

### Basics Of Openpit Mining Slideshare

Mar 13, 2012 Stripping ratio depending on quality of the coal ISN 15. Advantages of opencast mining There is no problem of ventilation There is no problem of Roof control, supports There is no problem of lighting in daytime.Percentage of coal extraction is much higher about90 than that of Underground mining 30-60 High OMS Much productivity profits.

### Mine Planning Design Pdf Coal Mining Mining

Stripping ratio OB Volume D Coal in tones C For accurate S.R,the volumes of OB and coal are to be made seam wise B. Final pit limits Contd. The boundaries are firmed up based on the economic stripping ratio. Economic stripping ratio varies with

### Analysis Of Highwall Mining Stability The Effect Of

highwall mining may account for around 45 million tons of clean coal production representing about 4 of the U.S. total production. In addition to being a very productive and economic coal production method, analysis shows that auger and highwall mining appears to be as safe as surface coal mining

### Coal Miningppt Scribd

Coal Mining-Methods. Mining Methods Coal is mined by two main methods surface or opencast mining and underground mining.. The choice of method is largely determined by the geology of the coal deposit the majority of the worlds coal reserves are recoverable by underground mining. The method used is determined by the depth of coal deposit and the overburden over it.

### Mining Terms Kau

Strip Mining Bedded deposits coal, phosphates . Quarry Mining aggregates, marble, granite . ... Stripping Ratio is the ratio of a unit of waste material removed per similar unit of ore material removed. Toe is the base of a bank bench or a slope. Waste Dump ...

### Chapter 4 Mining Waste Sgu

The ratio of waste rockore is called stripping ratio. For example, a stripping ratio of 21 means that 2 tonnes of waste rock needs to be removed to mine 1 tonne of ore. Generally, an open pit mine has a higher stripping ratio than an underground mine. Waste rock is often deposited in piles or heaps close to the mine to minimize transports.

### Pdf Surface Mine Design Researchgate

Auger mining is a surface mining techniq ue used to recover additional coal from a seam located behind a highwall produced either by stripping or open-pit mining.

### Underground Mining Methods And Equipment

employed when the depth of the deposit andor the waste to ore ratio stripping ratio are too great to commence a surface operation. Once the economic feasibility has been verified, the most appropriate mining methods must be selected according to the naturalgeological conditions and spatialgeometric characteristics of mineral deposits.

### Coal Mining Choosing A Mining Method Britannica

Coal mining - 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 depends on many

### Economic Surface Mining Of Multiple Seams

case of strip mining. With regard to the western coals, the outlook for the mUltiple-sewn strip-mining industry seems as favorable as Iltat predicted for the entire industry. A TYPICAL MULTIPLE-SEAM SURFACE COAL MINE Using a walking dragline and an electric sboveJ in tandem, Peabody Coal Company. at its Homeslead Mioe in Ohio

### 326 Maximum Allowable Stripping Ratio Srmax Abc

3.2.6 Maximum Allowable Stripping Ratio SRmax Earlier in this lesson, we looked at the maximum stripping ratio, and we did it for coal seam. You will recall that the maximum allowable stripping ratio, SR max, also called break-even stripping ratio, is the maximum amount of overburdenwaste that can be extracted per unit of ore at the ...

### Stripping Ratio Considerations Mining Reference Range

The ratio of the total volume of waste to total volume of ore is then the overall stripping ratio. PRICES AND COSTS With fluctuating commodity prices, increasing mining costs, and the introduction of more sophisticated mining techniques, the overall mining plan and overall stripping ratio can change over the total life of any mine.

### Glossary Of Coal Mining Terms Dol

bit for rock or coal, made by fusing an insert of molded tungsten carbide to the cutting edge of a steel bit shank. Cast - a directed throw in strip-mining, the overburden is cast from the virgin ore or coal to the previously mined area. Cave - a collapse of the mine workings. Certified - a person who has passed an examination to do a required ...

### Chapter 7 Energy From Fossil Fuels

Chapter 7- Energy from Fossil Fuels Oil Distribution, Politics and Spills Natural Gas Coal Energy in the News The Political Price of Mid-Eastern Oil Fossil Fuels The Major Energy Source World Oil Reserves King Huppert Oil Depletion Curve World Oil and Gas Production World Oil Production by Region Oil Consumption Another Way to Look at It Distribution of USA Oil Use Distillation of Crude Oil ...

### Pdf Lecture 4 Mine Transportationpdf Innocent Haule

Lecture 4 MINE LOADING AND TRANSPORTATION Introduction Once the rock has been fragmented it needs to be moved to its final destination which could be a waste rock muck pile or ores stock pile to feed the processing plant. From the working face materials are loaded with the use of any of the mucking units into a conveyance which carries it through horizontal, inclined, vertical or ...

### Mining What Is Mining What Are The 4 Mining Methods

Apr 28, 2019 Mining techniques. Surface mining. Surface mining is done by removing stripping surface vegetation, dirt, and, if necessary, layers of bedrock in order to reach buried ore deposits. Techniques of surface mining include open-pit mining, which is the recovery of materials from an open pit in the ground, quarrying, identical to open-pit mining ...

### Opencast Mining Coal Tms Johannesburg

The NCC Roodekop Coal Mine, located 35 km south of the town Witbank, is Universal Coals second operation. New Clydesdale Colliery comprises of opencast operation, which is extended by the underground workings at NCC Diepstruit section. Opencast Mining of Coal 250 000 TMTH Strip ratio of 3.5 M3T. 4 seam operation. Ongoing rehabilitation.

We achieved a slightly higher annual strip ratio than our guidance of 4.9x as favorable weather in the third quarter supported more overburden removal activities. Units 2018 2017 2018 vs 2017 Coal Production Mt 54.04 51.79 4 Sales Volume Mt 54.39 51.82 5 Overburden Removal Mbcm 273.55 238.70 15 Strip Ratio x 5.06 4.61 9

### Coal Types Formation And Methods Of Mining

Surface Coal Mining. Surface mining is accomplished by removing overburden from the coal seam and then blasting and removing the coal. The ratio of overburden excavated to the amount of coal removed is called the overburden ratio. The lower the ratio, the more productive the mine. The lowest overburden ratios are found in western surface mines.

### What Is Stripping Ratio Coal Mining Ppt Grinding Mill China

After coal comes out of the ground, it typically goes on a conveyor belt to a preparation plant that is located at the mining site. The plant cleans and processes

### Surface Mining Planning And Design Of Open Pit Mining

Jan 09, 2016 vii Stripping Ratio The ratio is most commonly expressed as Strip Ratio SR is the mass of waste to be mined to obtain one unit mass of ore. Waste tons SR