stripping method of mining

Strip Mining for Coal Surface mining Wikipedia

11 09 32 Mining for Coal in Stellarton on Nov6 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

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Surface Mining Techniques used in the Oil Sands Oil Strip Mining for Coal

The strip ratio SR is the simplest measure of mining efficiency Strip ratio is the fraction of overburden or waste ore versus the weight of bitumen rich oil sands A strip ratio of 2 is considered high but feasible if the ore grade is high enough 09 11 32 Almost 20 years since the strip mine began and it is still going strong here in Stellarton Nova Scotia In another five or six years time the mining should be complete and will mark the end of

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stripping method of mining durbanlizardscozaSurface Mining Industry of Metals Minerals Precious

Strip Mining Open pit Mining Surface Mining Mining Techniques Strip mining is a kind of surface mining The ore is very near to the surface of the land but Types of surface mining Strip mining This process involves the method of extracting the mineral by removing soil and rock which are deposited on the surfaceCoal and Lignite are the two principle minerals that are extracted through this method

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What are main methods of surface mining QuoraSurface mining Wikipedia

Strip mining open pit or open cut mining and quarrying are the most common mining methods that start from the earth s surface and maintain exposure to the surface throughout the extraction periodIn 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 extract a given amount of coal

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IFRS First Impressions homekpmgSurface Mining Methods and Equipment

The stripping activity asset is recognised as a component of the larger asset mining assets to which it relates which will be an item of property plant and equipment or an intangible asset On initial recognition the stripping activity asset is measured at cost which includes all directlymining solution mining leaching stripping rati o mining machinery excavation cutting grading loading ditching Contents 1 Surface Mining Methods 11Classification of Surface Mining Methods 12 Open Pit vs Underground Mining Methods 13 Open Pit Mining 14 Open Cast Mining 15 Placer Mining 16 Solution Mining 2 Surface Mining Machinery Glossary Bibliography Biographical

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stripping method of mining tcfuwhrorgstripping method of mining greenrevolutionorgin

Strip Mining and Land Utilization in Western Pennsylvania Jstor methods Open pit mining for such minerals as iron ore limestone and slate has been practiced for hundreds of years but the mining of coal by stripping is aSurface mining methods835 Кб Irrespective of the precise geology of the coal seam the general approach remains similar to conventional strip mining and Figure 22 and 23 show the terminology used and typical method of strip mining

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Strip Mining Flashcards QuizletSurface mining planning and design of open pit mining

The surface cast method where overburden is moved a short distance to one side from above the ore deposit to allow the later excavation and removal of ore itselfSurface 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

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Stripping Ratios Pit Limits Cutoff Grade Optimization 143 Open Cast Strip Mining 1of 2 We are Miner s

CHAPTER 8 Stripping Ratios Pit Limits Cutoff Grade Optimization Dr Teuku Andika R Putra USM Stripping Ratios The stripping ratio SR refers to the amount of waste that must be removed for a given quantity of ore in open pit miningmining This method differs from conventional area and contour mining in that blocks of overburden in excess of 70 ft 20 m wide are removed as a unit and deposited in mined out areas either perpendicular to the direction of advance area mining or along the outcrop direction contour mining If the mineral commodity is relatively shallow with more or less uniform cover the overburden can

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CHAPTER 1 STRIP MINING OPEN CAST MINING OF COAL 11 stripping method of mining durbanlizardscoza

CHAPTER 1 STRIP MINING OPEN CAST MINING OF COAL 11 Introduction The first steam shovels were introduced to strip mining in and then there has been a steady increase in the proportion of coal produced by surface mining methods The bituminous output was produced by strip mining The tons per man shift produced by strip mining methods have always been consistently higher than the Strip Mining Open pit Mining Surface Mining Mining Techniques Strip mining is a kind of surface mining The ore is very near to the surface of the land but

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The economics of extended pre strip strippingStripping ratio Wikipedia

A major operation in the recovery of any coal seam by surface mining methods is the removal of the overburden Fidler Of the available surface mining methods strip mining is arguably the most common method used to mine coal in Australia Pre strip by definition is the removal of any waste material not considered to be valuable In surface coal mines pre strip often refers to the 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 ore For example a 3 1 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock

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Mining of Iron Ores ispatguruMethods Strip Mining Archive It

The stripping ratio describes the unit of overburden that must be removed for each unit of crude ore mined A typical open pit iron ore mine is shown in Fig 1 Fig 1 A typical open pit iron ore mine On the basis of mining methods iron ore mining can be broadly divided into two categories namely manual mining and mechanized mining Large iron ore mines are mechanized mines while manual mining Strip mining is most often used on the plains Large equipment such as draglines removes the overlying soil and rock overburden to expose a relatively horizontal coal seam

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Cost Models of Theoretical Mining Operations CostMineOpen Pit Mining Methods

Each of the models is developed from first principles based on typical mining criteria for rock densities swell factors drill penetration rates etc Industry standard estimating methods are used for equipment selection personnel allocation and cost estimation These models are invaluable for early order of magnitude estimatOpen pit mining methods are applicable to mining ore deposits that apex at or near the surface If the deposit apexes below the surface the overburden and barren capping overlying the ore must be removed in advance of open pit mining The removal of this material is known as stripping The stripping pit limits must be extended beyond the

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Feasibility Study of a New Surface Mining Method strip ratio in coal mining Mine Equipments

A Proposed New Surface Mining Method Longwall Stripping The mining of shallow cover coal is necessary and vital to the Nation Air water and land the environment is also necessary and vital to the Nation To provide the Nation the means to extract shallow cover coal while protecting the environment a new surface mining system is proposed Longwall Stripping Longwall The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process In relation In relation 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

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