Surface mining - Wikipedia

"Strip mining" is the practice of mining a seam of mineral, by first removing a long strip of overlying soil and rock (the overburden).It is most commonly used to mine coal and lignite (brown coal).Strip mining is only practical when the ore body to be excavated is relatively near the surface.

What Is a Stripping Ratio? (with picture) - wisegeek.com

Dec 15, 2018· 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 ...

Mining 101 | West ia Coal Association

The higher the mining ratio (or more overburden moved per clean coal ton), the higher the cost of producing coal. In situations where a given coal reserve includes more than one coal seam, the recoverable coal volume from the multiple seams is factored together to lower the overall mining ratio for the entire coal reserve.

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

EFFECTS OF. STRIP MINING ... The operator continues making cuts until the ratio of overburden to coal becomes uneconomical. The operation then continues along the contour of the mountain until the coal resources, or the operator's resources, are exhausted.

stripping ratio coal mining comp - feentech.nl

In mining, stripping ratio or strip ratio refers to the ratio of the volume of overburden (or waste material) required to be, stripping ratio (from the article `coal mining`),great depths that it becomes uneconomical to continue with surface mining

Surface Strip Coal Mining Handbook - sacea.org.za

surface strip coal mining, either from a production, project or planning perspective. A ... 1.3.1 Stripping Ratio for Multiple Seams 11 1.4 BASIC PROFIT FUNCTION ANALYSIS 13 2 GEOLOGY AND EXPLORATION 2.1 GEOLOGY OF SOUTH AFRICAN COAL RESOURCES 2 2.1.1 Coal Formation 2

Mine wastes management - Mining and Blasting

for production from 300 m depths at stripping ratio of 1:15 for D and F grade quality of coal.17 If these mines were operational, it would mean that even if 1 million tonnes of coal were extracted, it would generate 15 million tonnes of waste material.

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 …

strip ratio in coal mining - elliothotelbb.co.za

Home / strip ratio in coal mining . strip ratio in coal mining. Mining - PwC. Mining, despite its status as a globally important industry, has received little specific attention over the company is its 'stripping ratio' for each mine. A stripping

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good strip ratio for a coal mine - humanrightsforum. In coal mining what is a good strip ratio The Q&A wiki 1 Overburden O/B 2 Coal ore 3 coal mining stripping ratio Zenith Hot-sale Products Glossary of Mining Terms vibrating sieve separator.

CHAPTER 11 Mining Technology - Princeton University

CHAPTER 11 Mining Technology The Federal Coal Leasing Amendments Act ... States, the recovery ratio is63 percent. Sur- face mines, on the other hand, typically re-cover from70 to 90 percent of the minable resource. ... mining of the preceding strip of coal. Mining Federal

Cline Mining Corporation • Projects • Mining Terms

Strip Ratio The stripping ratio is the most influential economic factor in the evaluation and planning of open-pit coal mines. It represents the volume of rock both above and within (partings) coal seams expressed in Bank Cubic Metres (BCMs) which must be mined to obtain 1 tonne of raw or clean coal.

What Is Stripping Ratio Coal Mining - bikerpoint.eu

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 price per ton would have to be 3750 to break mining strip ratio sharesguru australian shares forum. Contact Supplier.

What is stripping ratio in mining? - Quora

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

Images of Mountaintop Removal Mining | Earthjustice

Mountaintop removal coal mining, often described as "strip mining on steroids," is an extremely destructive form of mining that is devastating Appalachia. In just a few decades, more than 2,400 miles of streams and headwaters that provide drinking water for …

Break-even stripping ratio | Britannica.com

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 - diebold-bau.eu

The Ncondezi coal mine will be an open pit, low strip ratio, contractor mining operation producing 13 million tonnes of coal over a 25 year life of mine to supply to the adjacent power plant via a …

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.

In coal mining what is a good strip ratio - answers.com

President Jimmy Carter was the president that created a Departmentof Energy in 1977. He also made attempts to control the abuses ofstrip mining for coal.

break even stripping ratio example for coal mining

stripping ratio in coal mining - Newest Crusher, Grinding ... In coal mining what is a good strip ratio - The ... The break-even stripping ratio is a function of ... of the coal…

Stripping ratio | mining | Britannica.com

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 extract a given amount of coal. Stripping ratio s can also consider the selling price of coal, and a certain …

Strip Mining for Coal - YouTube

Sep 11, 2015· Almost 20 years since the strip mine began and it is still going strong here in Stellarton, Nova Scotia. ... Strip Mining for Coal JimHowDigsDirt. Loading... Unsubscribe from JimHowDigsDirt?

stripping ratio in coal mining - minemining.com

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 …

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 ...

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Industry Standard for Mining Cost Estimating Free Data & Samples Examples of Mining Cost Model, Mining Taxes, Smelting, Equipment, Electric Power and Labor Costs. ... The following table briefly summarizes the 2013 survey results for the U.S. metal, industrial mineral and coal mines.

Stripping Ratio Considerations | Mining | Reference Range

Lecture 4 Calculating Stripping Ratios for Area Strip Mines. Open Pit Stabiliti-report. ... 1.Stripping Ratio Considerations y Fig.4. 13.1. ... . it is necessary to update the longterm plan of the mining project at regular intervals. the overall mining plan and overall stripping ratio can change over the total life of any mine. as illustrated ...

effect of stripping ratio in coal mining | Solution for ...

STRIP MINING A ll mining operations have a disruptive effect on the … so long as the ratio between the overburden and the coal seam, called the stripping ratio, … In coal mining what is a good strip ratio …

Stripping Ratio In Coal Mining - mbokodoinns.co.za

The Coal Area Strip Mine Formula • Strip Ratio = OB Thickness (in ft) * 11.11/ Coal thickness in inches – Assumes coal is 80 lbs/ft^3 (good for bituminous) – Area Strip Mine Geometry – Geologic Stripping Ratio – no accounting for rehandle or less than coal recovery .

1 4 Stripping Ratio | Ratio | Surface Mining - Scribd

Break even stripping ratio (BESR) In case of coal deposits, In case of other deposits, ... Documents Similar To 1 4 Stripping Ratio. Ore Reserve Estimation. Uploaded by. Enrique Cruz Checco. ... Lecture 4 Calculating Stripping Ratios for Area Strip Mines. Uploaded by. ihateu1. Introductory Mining Engineering - 2nd Edition by Hartman.

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 …