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sbm stripping ratio of al mineStripping Ratios,Pit Limits & Cutoff Grade Optimization Stripping Ratios,Pit Limits & Cutoff Grade Optimization Whats the average stripping ratio of open pit mines around. Even if there was an average of ALL open pit mines that would not offer any knowledge regarding open pit mining.The stripping ratio in a mine is chosen based on economics. Lecture 4 Calculating Stripping Ratios for Area Strip. Lecture 4 Calculating Stripping Ratios for Area Strip Mines Free download as Powerpoint Presentation (.ppt),PDF File (.pdf),Text File (.txt) or view presentation slides online.bREAK EVEN STRIPPING RATIO Stripping ratio Wikipedia Other articles where Stripping ratio is discussed: 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.Stripping ratios can also consider the selling price of coal,and a certain minimum profit can be added to the total cost of producing and… stripping ratio of coal mine,basic equipments and. Stripping ratio Wikipedia.2019 12 19 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. 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. Geology of the Jamestown mine,Mother Lode gold … 2009 6 30 · Geology of the Jamestown mine,Mother Lode gold district,CA,and geochemistry of the Harvard mine pit lake By Kaye Savage,Roger Ashley,& Dennis Bird stripping and mining 的翻译结果 cnki翻译助手 Under the market economy conditions,the key of open pit mine's production is to optimize the design,stripping and mining plan and cost.在市场经济条件下,露天矿山生产的关键是设计、采剥计划及成本最优。 短句来源 Application of double two bench merged stripping and mining system for inclined slice. Collahuasi Copper Mine Mining Technology Mining News. Collahuasi copper mine is situated in northern Chile,about 180km southeast of the port of Iquique,at an altitude of 4,000m.The mine is 44% owned by Xstrata plc (following its acquisition of Falconbridge Ltd in 2006) in a joint venture with Anglo American (44%) and a Japanese consortium (12%) comprising Japan Collahuasi Resources BV,Mitsui & Co.Ltd.Nippon Mining & Metals Co.Ltd.and. Stripping ratio mining Britannica 2020 2 24 · Other articles where Stripping ratio is discussed: 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.Stripping ratios can also consider the selling price of coal,and a certain minimum profit can be added to the total cost of producing and… McEwen Mining Inc. Operations Los Azules Los Azules is a 100% owned advanced stage porphyry copper exploration project located in the cordilleran region of San Juan Province,Argentina,near the border with Chile.During the first 10 years of operations Los Azules is anticipated to be the world's 25th largest copper producer and a lowest cost quartile producer. strip ratio in coal mining Mine Equipments Stripping ratio Wikipedia,the free encyclopedia In mining,stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material) required to … Dragline Digging Methods in Australian Strip Mines 2018 4 17 · Dragline Digging Methods in Australian Strip Mines A Survey H.Mirabediny University of Wollongong.The idea of modifying the digging method becomes increasingly more attractive as stripping ratio increases during mine life,particularly in multi seam operations.r around 47 mJ (Atkinson et al,1985).The new Surface Mining Techniques used in the Oil Sands Oil. SURFACE MINING ≠ STRIP MINING: Although sometimes mistakenly referred to as strip mining,oil sands is actually mined from an open pit below several meters of overburden.Strip mining is the mining of a relatively flat deposit very close to the surface,commonly used in coal or phosphate industries. Dynamic capacity balance between stripping and … The reliability factors of a dragline stripping system were analyzed using system reliability theory to improve its reliability and ensure the stability of surface coal mine production.The relationship between the dragline scheduled stripping volume with both the weighted average thickness of the coal seam and the height of the blast casting bench was derived. Global Distribution of Used and Unused Extracted … 31 · In today’s global economy,sustainable resource management requires a consumption perspective of resource use and insight into actual resource use through the global supply chain.The estimated global amount of used and unused extraction caused by mineral extraction of iron,copper,and nickel more than doubled from 1990 to 2013 (iron,2.8 6.7 Pg; copper,2.7 5.5 Pg; nickel,0.19 0.60 Pg). How do you calculate stripping ratio for Open Pit Mines.  · How do you calculate stripping ratio for Open Pit Mines?.The two basic types of mines are the open pit mine and the underground mine.They are quite self explanatory. How to profit from low grade gold mines MINING.COM  · The mine plan entails a very low strip ratio (0.76:1),which means every there is very little waste ore to help keep costs low and gold production high.At … Opencast Mining Opencast mining operation involves generation of massive mine waste,altering the existing landscapes,alterations to drainage patterns etc (Fig.20.4).As a result,significant areas of land are degraded and existing ecosystems are replaced by undesirable wastes.To mitigate the impact on environment,a structured and adoptable environment management practice is being continuously developed at. Coal mining 2020 2 10 · Coal mining is the process of extracting coal from the ground.Coal is valued for its energy content and since the 1880s,has been widely used to generate electricity.Steel and cement industries use coal as a fuel for extraction of iron from iron ore and for cement production.In the United Kingdom and South Africa,a coal mine and its structures are a colliery,a coal mine a pit,and the. Managing risk and waste mining in long term production. 2017 11 28 · Managing risk and waste mining in long term production scheduling of open pit mines M.Godoy and R.Dimitrakopoulos.(stripping ratio) and • ore production rates that meet mill feed requirements.ule having different combinations of stripping ratios over the life of the mine and reflects possible spatial arrangements for Financial reporting in the mining industry International. International Financial Reporting Standards (IFRS) provide the basis for financial reporting to the capital markets in an increasing number of countries around the world.Over 100 countries either use or are adopting IFRS.Those companies already on IFRS have their own challenges as the pace of standard setting from the International Definisi Pertambangan Pertambangan BESR 2 untuk menentukan maksimal berapa ton waste yang disingkirkan untuk memperoleh 1 ton ore agar tahap penambangan ini masih memberikan keuntungan (max allowable stripping ratio) dan untuk menentukan batas pit (pit limit). Karara Iron Ore Mine 2020 2 22 · The mine will have a 0.38:1 waste to ore stripping ratio.A trial mining project was carried out in December 2010 based on the Karara South and Karara East DSO deposits.The Karara East was bought into production in the same month.First shipment of hematite from the mine … ECONOMIC ASSESSMENT AND MINE PRODUCTION. In the economic evaluation,variables as the breakeven cutoff grade (BCOG),stripping ratio and optimal cutoff grade (OCOG) will be considered in order to determine the Net Present Value (NPV),Internal Rate of Return (IRR) and mine life.The BCOG is the minimum grade Overburden Removal However,in hard rock mining to define the stripping ratio in the example of Fig.1,consider mining of the ore ABC at depth h.Having defined the slope angle at this mine section,the waste (overburden) section AICD must be re moved.The ratio of this overburden stripped to mine the ore is known as the average stripping ratio (SR). Collahuasi Copper Mine 25 · Collahuasi copper mine is situated in northern Chile,about 180km southeast of the port of Iquique,at an altitude of 4,000m.The mine is 44% owned by Xstrata plc (following its acquisition of Falconbridge Ltd in 2006) in a joint venture with Anglo American (44%) and a Japanese consortium (12%) comprising Japan Collahuasi Resources BV,Mitsui & Co.Ltd.Nippon Mining & Metals Co.Ltd.… What Is a Stripping Ratio? (with picture)  · The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process.In relation to its application in the mining of ore,the utility of the stripping ratio is the determination of the approximate ratio of waste material that must be moved in order to reach a certain ratio of ore. what is stripping ratio coal mining High stripping ratio requires careful planning Mining Weekly 6 Dec 2002.This is due to the high stripping ratio of 19:1 at the mine,meaning for every ton of reef,there is 19 t of overburden.Louw,who learnt the mining. Slope Stability 2013 ore feed to the mill is close to 11 Mt a.The stripping ratio in current LOM (mine life to 2034) is on average 0.6 but a major extension program is ongoing and for the next nine years the stripping ratio will be around 1.2.Part of the main pit extension program involves new infill drillings,altogether 39 km in 2012 14.The CHAPTER V MINING METHODS AND COAL PROCESSING … 2015 12 4 · of the deposit,the stripping ratio of overburden to ore (coal or stone),or both become.Pabedana coal mine is an underground mine operated by government and at present is administered by a private company.Exploitation coal from Pabedana area was started in 1977.(Hindistan et al.2010). Mining 8 · drawdown,also considering grades and Stripping Ratio (SR) variability during mining sequence for a phosphate mine.The results show a difference of U$ 140 million for the evaluation considering and not considering groundwater level,without considering other restrictions.keywords: sequencing,mining,groundwater,mineral economics. Major Mines & Projects Trapper Mine The coal seams that are mined at the Trapper Mine have consisted of a mixture of subbituminous A,B,and C,and high volatile bituminous C coals.Average,as received,values of ash yield are 7.05 percent and sulfur content is 0.40 percent,with a heat value of 9,931 British thermal units per pound (Johnson et al… (PDF) Stripping Ratios,Pit Limits & Cutoff Grade. Stripping Ratios,Pit Limits & Cutoff Grade Optimization Annexure 7 · c) Life of the mine : Underground workings : Opencast workings : Overall : d) Indicate quantum of production and expected grade as in table below : Year UG Opencast Production Mt (Mt) Production Mt OB (Mcum) Stripping ratio (cum t) ROM coal lignite Saleable Beneficiated coal lignite Washery rejects Year wise till targetted Environment Impact Assessment of Coal Mining 2013 11 13 · Environment Impact Assessment of Coal Mining Dhruv Katoria1,Dhruv Sehgal2 and Sameer Kumar3.mine in 20 years has a potential to destroy around 800 ha of land 2).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 Optimization of separation processing of copper and iron … 27 · Mine,the concentration of Cu2+ was designed as 1 g L.Now it maintains about 0.3 g L for several years.The concentration ratio of Cu2+ to Fe3+ is very low.The accumulated concentration of Fe3+ in the electrowinning solution is up to 6−8 g L.Therefore,it is Understanding Iron Ores and Mining of Iron Ore IspatGuru Apr 03,2015 · Stripping ratios increase with the quality of the ore being mined and cost factors related to beneficiation and transportation.The economic stripping ratio varies widely from mine to mine,depending upon a number of factors.In the case of direct shipping ores,it may be as high as 6:1 or 7:1.In the case of low grade ore,a stripping ratio. what is stripping ratio coal mining mine equipments.com High stripping ratio requires careful planning Mining Weekly 6 Dec 2002.This is due to the high stripping ratio of 19:1 at the mine,meaning for every ton of reef,there is 19 t of overburden.Louw,who learnt the mining. Mining Intelligence and News 777 Mine A1 Mine Ad Duwayhi Mine AGA Mineracao Operation Agbaou Mine Agi Dagi Project Agnew Mine Agua Rica Project Ahafo Mine Aitik Mine Ajax Project Akasaba West Project Aktogay Mine Akyem Mine Al Amar Mine Alamo Dorado Mine Albazino Mine Aldiss Centre Almas Project Altan Tsagaan Ovoo (ATO) Mine Alumbrera Mine Amancaya Mine Amandelbult. Stripping Ratio Mineral Production Activities. 6.Stripping ratio.The main factor in designing a n open pit mine,which largely determines the cost of mining,is the stripping ratio.Stripping is the removal of waste rock from above and around the orebody.Stripping ratio is defined as the tonnage of waste rock to be mined,divided by the tonnage of ore to be mined from the pit. A decision support system for determination of a. With the same respect,the NPV of all UPL alternatives are estimated.According to the results,UPL1 is the smallest pit limit,and it contains 60 Mt of ore with a stripping ratio of 1.46.UPL13 is the largest one,and it contains 768 Mt of ore while the stripping ratio is … Optimization of separation processing of copper and iron … 2008 9 27 · Abstract: The effects of the concentration of Lix 984N,phase ratio,initial pH value of aqueous phase and extraction time on the extraction of copper and iron under the condition of low Cu2+ Fe3+ ratio in dump bioleaching solution of Dexing Copper Mine were IFRIC 20 — Stripping Costs in the Production Phase of a.  · IFRIC 20 considers when and how to account separately for the benefits arising from the removal of mine waste materials ('overburden') to gain access to mineral ore deposits,as well as how to measure these benefits both initially and subsequently.IFRIC 20 was issued on 19 October 2011 and applies to annual periods beginning on or after 1 January 2013. Determination of open pit diamond mine limits with … The analysis of methods to account for stripping time difference at the stage of determination of limits in deep open pit mining reveals advantages and shortcomings of the methods and provides a principled approach to determination of a discount ultimate strip ratio for the most representative geological and geotechnical conditions of diamond bearing ore bodies in the form of single pipes. Dynamic capacity balance between stripping and … The reliability factors of a dragline stripping system were analyzed using system reliability theory to improve its reliability and ensure the stability of surface coal mine production.The relationship between the dragline scheduled stripping volume with both the weighted average thickness of the coal seam and the height of the blast casting bench was derived.The results show that the. NRRI TSR 2011 01 2019 7 12 · any mine developed more than one mile to the south of historic iron ore mining activity will be more than 1,000 feet below ground surface.Figure 1.“Waste” (overburden through LC 5) to “Ore” (LC 4 and LC 3) ratio (stripping ratio) within area of interest (Zanko et al.2003). Find out about the Salobo project,Vale’s largest copper. The mine is located in Marabá,in the southeast of Pará,and went into operation in November 2012.The venture has an estimated nominal capacity of 100,000 tons of concentrated copper per year.With the Salobo II mine expanding this operation,the enterprise's production … Stripping Ratios: What are They and Why are They … A strip ratio,or stripping ratio,is an important measurement related to the open pit mining process.It represents the amount of waste material,also known as overburden,that must be moved in. Overburden Removal Surface Mining  · However,in hard rock mining to define the stripping ratio in the example of Fig.1,consider mining of the ore ABC at depth h.Having defined the slope angle at this mine section,the waste (overburden) section AICD must be re moved.The ratio of this overburden stripped to mine the ore is known as the average stripping ratio (SR). How do you calculate the stripping ratio Answers We divide the overburden thickness by ore thickness to get the stripping ratio For example if we have an overburden thickness of 80m and ore thickness of 50 m,then the stripping ratio will be. Stripping Costs in the Production Phase of a Surface Mine 4 The material removed when stripping in the production phase will not necessarily be 100 per cent waste; often it will be a combination of ore and waste.The ratio of ore to waste can range from uneconomic low grade to profitable high grade.Removal of material with a low ratio of ore to waste may produce some usable material,which can be used to Project Summary Taseko Mines Limited In May of 2015,the Company completed an updated mine plan for Gibraltar featuring a 50% decrease in strip ratio.This new mine plan was a result of a detailed,six month engineering study and forms the basis of an updated NI 43 101 compliant reserve (see News Release May 5,2015: Taseko Announces Improved Economics At Its Gibraltar Copper Mine). mine strip ratio Spanish translation Linguee Many translated example sentences containing "mine strip ratio" Spanish English dictionary and search engine for Spanish translations.Look up in Linguee; Suggest as a translation of "mine strip ratio".Conversely,in periods when the actual ratio was less than the life of mine stripping ratio,we reduced the capitalized mine stripping. Saprolite slope design at the Rosebel Gold Mine 2019 12 21 · ramp angle than surrounding rock and in turn impacts stripping ratio if an over conservative design approach is used.Vanderhaeghe et al.1998).In the Rosebel Gold Mine area,these greenstone belt forming rocks are divided into three supracrustal rock types including,from the bottom upwards,the Rosebel district felsic to mafic volcanic. What is Strip Mining? (with pictures) 21 · Strip mining is a type of surface mining which involves the removal of a thin layer of material known as an “overburden” to access buried deposits of useful minerals.This type of mining is only effective in areas where mineral deposits are very close to the surface,making it feasible to quickly and easily remove the overburden to get to them. stripping ratio of al mine Alla Tana del Lupo stripping ratio of al mine.stripping ratio of al mine.Stripping Ratios: What are They and Why are They.A strip ratio,or stripping ratio,is an important measurement related to the open pit mining process.It represents the amount of waste material,also known as overburden,that must be moved in. stripping ratio of al mine stripping ratio of al mine.stripping ratio of al mine.Stripping Ratios: What are They and Why are They.A strip ratio,or stripping ratio,is an important measurement related to the open pit mining process.It represents the amount of waste material,also known as overburden,that must be moved in. Determination of Optimum Production Capacity and … 13 · Determination of Optimum Production Capacity and Mine Life.The study reported by Askari et.al.[17] yields the trajectory of the pit geometry over time with the respective volume of materials and net present value (NPV) of the mining operation.The stripping ratio increases when mine goes deeper while the amount of recovered Whats the average stripping ratio of open pit mines … Even if there was an average of ALL open pit mines that would not offer any knowledge regarding open pit mining.The stripping ratio in a mine is chosen based on economics. How do you calculate stripping ratio for Open Pit Mines. Apr 30,2013 · How do you calculate stripping ratio for Open Pit Mines? Answer.Wiki User April 30,2013 10:21AM.The two basic types of mines are the open pit mine and the underground mine. Selection of practical bench height in open pit mining. 9 · Dilution versus bench height (Bozorgebrahimi et al.2005).Figure 3.Large block of the simple sequencing method.In open pit mining,factors that can affect the degree of dilution can be regarded as deposit related or mine related.The bench height is a mine related parameter that can be studied using a simple geometrical model of Managing risk and waste mining in long term production. 28 · of products,ore and waste,are removed to meet the mine’s demand.The optimal schedule maximizes the net present value (NPV) of the project subject to constraints,including: • feasible combinations of ore and waste production (stripping ratio) and • … Here's What's Next for the World's Biggest Mining Story. Less than a 2:1 strip ratio,which is an excellent ratio of overburden (waste material) to ore.This mine has some of the most desirable economics on the planet for a bulk tonnage mine.) About one year ago,I urged a huge crowd to buy shares in a small company that controlled the world's largest undeveloped gold and copper deposit. 4 Uranium Mining,Processing,and Reclamation … T his chapter outlines the basic steps involved in mining,processing,and reclamation that might be suitable for uranium ore deposits in the Commonwealth of Virginia.For uranium ore deposits,the choice of mining methods and processing options is very deposit specific and dependent on many variables such as the quality and quantity of the ore,the shape and depth of the ore deposit,site. Availability of Coal Resources for Mining in Illinois 2007 5 22 · available coal in the United States (Eggleston et al.1990).As part of this ongoing,cooperative effort,the Illinois State Geological Survey (ISGS) is assessing the availability of coal resources for future mining in Illinois.This report assesses the availability of coal resources in the Shawneetown Quad rangle in southeastern Illinois (fig.1). Stripping Ratios,Pit Limits & Cutoff Grade Optimization Stripping Ratios,Pit Limits & Cutoff Grade Optimization About Us 24 · The SDJ and TBR mines have sub bituminous,low ash and low sulphur coal with calorific values of around 4,200 kcal kg,with an average stripping ratio of less than 3.5.BEK and STT mining concessions are located in Kutai Barat,East Kalimantan. Stripping ratio 6 · 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.Stripping ratios are typically reduced to show the volume of waste removal required to extract one unit. What Is a Stripping Ratio? (with picture) Oct 26,2019 · The stripping ratio method of calculating the profitability of the mining procedure is commonly used in the ore or coal mining process.In relation to its application in the mining of ore,the utility of the stripping ratio is the determination of the approximate ratio of waste material that must be moved in order to reach a certain ratio of ore. stripping ratio of al mine what is stripping ratio coal mining Mine Equipments.Stripping ratio Wikipedia,the free encyclopedia 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 volume of.Get Price And Support Online; stripping ratio in coal mining crusherasia How to calculate stripping ratio? The stripping ratio.The MINDER system (MINe Design using Expert Reasoning),has been developed to a prototype level in the Department of Mining Engineering,University of Nottingham.The Xi. Surface Coal Mining Methods in Australia InTech Surface Coal Mining Methods in Australia Rudrajit Mitra and Serkan Saydam.operating at higher stripping ratios (Westcott et al.2009).dragline strip mine and techniques such as throw blast and doze assist can also be incorporated.A good example of this design is … Strip Mining an overview ScienceDirect Topics During strip mining of metal containing ore deposits and of bituminous coal,pyrite is exposed to oxygen and moisture and becomes the source of an acidic,iron rich leachate known as acid mine drainage (AMD) (Fig.15.5).Acid mine drainage can have a pH of less than 2,and at that pH metal solubility is greatly increased. Major Mines & Projects Chidliak Project Mining of the deposits will produce a total of 9.5 Mt of processing plant feed and 75.1 Mt of waste (7.9:1 overall strip ratio) over a year mine life.The current life of mine (LOM) plan focuses on achieving consistent plant feed production rates,and early mining of higher value material,as well as balancing grade and strip ratios. ABOUT US 2020 2 24 · ABOUT US.OUR BUSINESS “A low cost Indonesian coal producer employing.with an average stripping ratio of less than 3.5.BEK and STT mining concessions are located in Kutai Barat,East Kalimantan.Coal mining operations at BEK mine was commenced in February 2012 and placed under care and maintenance in September 2014.However,in late 2017. Mowana copper mine Report Wood Mackenzie  · Mowana is an open pit mine.From 2009 to 2014 the mine had a very high stripping ratio averaging 20:1.Plant capacity steadily increased and reached 1.4 Mt a by 2017.The operation was suspended in 2015,and restarted again in 2017,with this analysis based on commercial production declared from mid 2018. IAS 16 — Accounting for production phase stripping costs. strip ratio approach,which makes use of a strip ratio using the long term mine plan data; and ; specific identification approach,whereby the costs of a stripping campaign are allocated to the section of the mineral ore that become accessible as a result of the campaign. Major Mines & Projects Karowe Mine This is not unusual for a new open pit.The ratio of ore tonnes down while waste tonnes up,for a small pit of this nature is healthy from a practical point of view as it demonstrates that the pit has been effectively stripped and should have adequate working space.The life of mine stripping ratio is 2.46:1 waste ore to the planned closure in. 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 million tonnes of … Cost Models of Theoretical Mining Operations CostMine This mine is an open pit mine producing 5,000 tonnes ore and 5,000 tonnes waste per day.Rock characteristics for both ore and waste are typical of those of granite or porphyritic material.Operating conditions,wage scales,and unit prices are typical for western U.S.mining operations.All costs listed are in 2012 US$. life of mine stripping ratio Traducción al español Linguee The mine stripping ratios are used to determine the amount of mine production costs to be charged against earnings.southernperu.com.southernperu.com.Los ratios de desmonte de mina se usan para determinar el monto de los costos de producción minera que se deben [.] cargar contra los ingresos. Stripping Ratios: What are They and Why are They Important. A strip ratio,or stripping ratio,is an important measurement related to the open pit mining process.It represents the amount of waste material,also known as overburden,that must be moved in. life of mine stripping ratio Muchos ejemplos de oraciones traducidas contienen “life of mine stripping ratio” Diccionario español inglés y buscador de traducciones en español. 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 ore.For example,a 3:1 stripping ratio means that mining one tonne of ore will require mining three tonnes of waste rock. “This Vale Vale’s operational mine parameters are outstanding and sustainable in the long run 0.7 1.5 1.3 1.6 Vale Peer1 Peer2 Peer3 Average Strip Ratio Average Mine Haulage Distance Km,2015 Ratio,2015 3.1 5.9 3.9 Vale Peer1 Peer2 Peer3 64 60 60 58 Vale Peer1 Peer2 Peer3 Average Product Fe Content Global Metallic Recovery1 31 23 26 19 Vale Peer1 Peer2. CHAPTER 11 Mining Technology 19 · the West was the York Canyon Mine of Kai ser Steel located near Raton,N.Mex.Al though the York Canyon Mine is not located on Federal leases,New Mexico provides op portunities for the implementation of longwall mining on Federal land.Longwall systems have also been intro duced in several mines with Federal leases in what is stripping ratio coal mining This is due to the high stripping ratio of 19:1 at the mine,meaning for every ton of reef,there is 19 t of overburden.Louw,who learnt the mining.Deloitte Energy & Resources Extracting value Issue 7 Stripping ratio,Stripping costs are allocated to all production on the basis of. CHAPTER 11 Mining Technology 2007 3 19 · the West was the York Canyon Mine of Kai ser Steel located near Raton,N.Mex.Al though the York Canyon Mine is not located on Federal leases,New Mexico provides op portunities for the implementation of longwall mining on Federal land.Longwall systems have also been intro duced i Surface mining planning and design of open pit mining 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.