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  • Stripping ratio and pit limit Basic Mining Techniques

    The units for stripping ratios can vary and usually depends on the geological properties of the deposit and the commodity mined. It can be expressed in tonnes (t), or cubic meters (m 3).Usually for coal, cubic meters (m 3) or tonnes (t) are used.However, for hard rock mines where the geology is usually complex with the presence of various rock types, tonnage (t) is usually preferred.

  • break even stripping ratio example for coal mining

    break even stripping ratio example for coal mining One unit of mineral reserve that is mined gives rise to one unit that is sent for processing. On average the time to handle one unit (1/M) is very small for Archean gold deposits (1/160 000) and even smaller for large Wits-type gold deposits (1/1 200 000).

  • Break-even stripping ratio Britannica

    In coal mining: Contour strip mining. If the break-even stripping ratio remains favourable, further cuts into the hillside will be made. Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be recovered by underground mining or by augering.

  • break even stripping ratio example for coal mining

    For example, the current maximum depth for underground coal mining is . between an analysis using a break-even economic hurdle and inclusion of at least 1 or 2 percent profit to technically meet the definition of reserves is minor, especially for evaluations extensive, very thick, low stripping ratio resources in the PRB.

  • What Is a Stripping Ratio? (with picture)

    May 09, 2020· Stripping ratio is a term that is derived from the mining industry and is used in reference to the open-pit mining process. 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

  • Mining Surface mining Britannica

    Mining Mining Surface mining: It has been estimated that more than two-thirds of the world’s yearly mineral production is extracted by surface mining. There are several types of surface mining, but the three most common are open-pit mining, strip mining, and quarrying. These differ from one another in the mine geometries created, the techniques used, and the minerals produced.

  • Stripping Ratios: What are They and Why are They Important

    Examples of stripping ratios. Ioannou gave some examples of mines with good strip ratios, including Lundin Mining’s (TSX:LUN) Candelaria copper-gold-silver mine in Chile at 2.8:1, and Copper

  • Stripping Ratio Calculation In Mining

    Break-even stripping ratio Britannica. Other articles where Break-even stripping ratio is discussed: mining: Pit geometry: The break-even stripping ratio is a function of ore value and the costs involved. Get Price And Support Online; calculating bcm coal mining Grinding Mill China. No. Products Photo Info. Operating; 1.

  • (PDF) Stripping Ratios, Pit Limits & Cutoff Grade

    Stripping Ratios, Pit Limits & Cutoff Grade Optimization

  • How to calculate stripping ratio? ResearchGate

    For instance: If the thickness waste rock (overburden) is 100m and the thickness of coal is 50m then stripping ratio would be 2:1. That means one m3 (cubic meter) of coal would need mining two m3

  • 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. Stripping ratios are typically reduced to show the volume of waste removal required to extract one unit

  • docsity-stripping-ratio-and-break-even-stripping-ratio

    View Notes docsity-stripping-ratio-and-break-even-stripping-ratio.pptx from EARTH SCIE GEO-104 at Bahria University, Islamabad. STRIPING RATIO AND BESR IN OPEN PIT MINING

  • Stripping Ratio Calculation In Mining

    Break-even stripping ratio Britannica. Other articles where Break-even stripping ratio is discussed: mining: Pit geometry: The break-even stripping ratio is a function of ore value and the costs involved. Get Price And Support Online; calculating bcm coal mining Grinding Mill China. No. Products Photo Info. Operating; 1.

  • How to calculate stripping ratio? ResearchGate

    For instance: If the thickness waste rock (overburden) is 100m and the thickness of coal is 50m then stripping ratio would be 2:1. That means one m3 (cubic meter) of coal would need mining two m3

  • Rama Dauphian Gautama Provinsi Kalimantan Timur

    - Estimated Break Even Stripping Ratio (BESR) for Coal Surface Mining Evaluated and Review Yearly Plan Forecast Unit Equipment Production Overburden and Coal Evaluated and Review Yearly Plan Mining Sequence (pit and disposal) for Overburden and Coal based on Stripping Ratio

  • break even ratio for australia coal mining

    What Is Stripping Ratio Coal Mining bikerpoint. break even stripping ratio example for coal mining. what is stripping ratio coal mining mining strip ratio sharesguru cubic feet or 1275 tons of coal for a ratio of 1875 if the total cost to mine was 300 per cubic yard the coal sales p per ton would have to be 3750 to break mining strip ratio

  • coal mining stripping ratio BM Garden

    Break-even stripping ratio Britannica. In coal mining: Contour strip mining If the break-even stripping ratio remains favourable, further cuts into the hillside will be made Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be recovered by underground mining or by augering [7/27 Online]

  • Break Even Striping Ratio--Mechanic Machinery

    Break Even Stripping Ratio Example For Coal Mining In general terms the break even stripping ratio is given in general terms the break even stripping ratio is the cost of mining waste ore h 50 40 ft 50 waste 50 ft example problem 3 the break even stripping More Info gt Live Chat what is stripping ratio coal mining ppt. chat online

  • Breakeven stripping ratio

    break even stripping ratio example for coal mining. break even stripping ratio example for coal mining Coal mining Wikipedia, the free encyclopedia The goal of coal mining is to obtain coal from the ground. Coal is valued for its energy content, and, since the 1880s, has been widely used to generate ele.HistoryMethods of .

  • stripping ratio in coal mining cycletransportation

    Break-even stripping ratio Britannica 2018-10-12 · In coal mining: Contour strip mining. If the break-even stripping ratio remains favourable, further cuts into the hillside will be made. Otherwise, if there are sufficient reserves under the knob of the hill, the coal may be recovered by underground mining or by augering.

  • stripping ratio in coal mining

    break-even stripping ratio Britannica, overall stripping ratio The break-even stripping ratio is a function of ore value Essel Mining & Industries Ltd The extractable reserve base of the asset is 374 MT with a Coal:OB stripping ratio of 072 The mining operations are fully mechanised with deployment of. know more. Cost Models of

  • stripping ratio coal mining comp,luisha mining enterprise sprl

    break even stripping ratio example for coal mining. 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 040ton ore and a stripping cost of 050ton of waste.

  • Lecture 4 Calculating Stripping Ratios for Area Strip

    Some mining costs are fixed (many administrative features for example) Others are variable direct materials handling cost What goes into Break Even Stripping Ratio Direct materials costs go into Break Even Fixed Costs are charged to the average stripping ratio you mine over the time Simple Stripping Ratios Bottom of a Strip Mine Top of a Strip

  • ANALISIS BREAK EVEN STRIPPING RATIO UNTUK DESAIN PIT

    Mine age of fixed BESR is 10 years. As dynamic BESR give total coal reserve 65.297.477 ton with NPV USD 826.886.944,92, IRR 85% and pay back period 1 year 7 month with 11 years of mine age. Kata Kunci : Break Even Stripping Ratio (BESR), Desain Pit,