(PPT) Calculating Stripping Ratios for Area Strip Mines ...

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 Your Turn • Use What You Have Learned About Calculating ...

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Overburden stripping works - «Mining Encyclopedia»

The operational expenditures during the overburden stripping works are being redeemed using the addition of the current cost of the unit of the overburden, which is plied by the planned ("redemption") overburden stripping coefficient, to the current cost of .

stripping overburden line mining - mvorouteplanner

Surface mining Wikipedia. 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.

Making light of quarry overburden • Aggregate Research ...

Making light of quarry overburden 18th September 2014 14th March 2016 Quarry overburden in the quarrying and aggregate production process is the only by .

Mining Flashcards | Quizlet

In strip mining, the overburden is removed, and then lots of small holes are drilled in the rock just over the ore. Explosives are then placed in the holes to break up the rock so that it is easier to find the mineral. Strips of land are mined one at a time. Each successive strip is cut out parallel to the previous one.

Overburden stripping using large slushers - AusIMM

The overburden slusher (OS) is proposed as a stripping tool that is expected to find application in overburden stripping operations including open cut coal and oil shale mines. OS is expected to combat the effects of increasing depth on the productivity of conventional dragline stripping. Although previously developed stripping techniques have included the use of...

Strip mining | Britannica

Strip mining, removal of soil and rock (overburden) above a layer or seam (particularly coal), followed by the removal of the exposed mineral. The common strip-mining techniques are classified as area mining or contour mining on the basis of the deposit geometry and type. The cycle of operations for ...

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Graham Lumley | 6 publications | University of the ...

University of the Sunshine Coast ... (OS) is proposed as a stripping tool that is expected to find application in overburden stripping operations including open cut coal and oil shale mines. OS is ...

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 ...

APES #15 Flashcards | Quizlet

Type of surface mining used where the terrain is flat. An earthmover strips away the overburden, and a power shovel digs a cut to remove the mineral deposit. After removal of the mineral, the trench is filled with overburden, and a new cut is made parallel to the previous one. The process is .

(PPT) Calculating Stripping Ratios for Area Strip Mines ...

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 Your Turn • Use What You Have Learned About Calculating ...

Topsoil and Overburden. - nrc.gov

or placing the stripping depths on the topsoil survey maps. If the single map set is chosen the mine plan should clearly reference this fact. The symbolism on the map should include mapping unit number or letter, soil phase, and stripping depth. For example: 102A-24 where: 102 is the map unit number A is the phase 24 is the stripping depth

OVERBURDEN STRIPPING PROGRAM - Ontario

OVERBURDEN STRIPPING PROGRAM MCGARRY PROJECT, MCGARRY TWP., ONTARIO TRANSPACIFIC RESOURCES INC. LOCATION AND ACCESS The McGarry Project of Transpacific Resources Inc. is situated in the northwest quarter of McGarry Twp., Larder Lake Mining Division, Ontario. The community of iatown is located approximately 2 kilometers to the south.

Pore Stripping Using Elmers Glue That Works!!! - YouTube

Jan 13, 2015 · I can't say enough that this works. Yes, elmers glue work for pore stripping. Inexpensive and it work!! Watch this video and judge for you self. I have included pictures at the end of the video ...

CHAPTER 11 Mining Technology - Princeton University

remove the overburden in strip mining, varies in size from 10 to over 200 cubic yards. Many Eastern mines use stripping shovels instead of draglines; and stripping shovels currently are being used successfully at several strip mines in the West such as the Rosebud Mine in the Montana portion of the Powder River basin which produces Federal coal.

Open-Pit Mining Methods

Open-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 limits of the ore pit to provide a bench, and the pit ...

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

CHAPTER 8 Stripping Ratios, Pit Limits & Cutoff Grade Optimization Dr. Teuku Andika R Putra USM 2014 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 mining.

IFRIC 20, policy for deferred stripping costs, mining ...

Rio Tinto plc – Annual report – 31 December 2018 Industry: mining 1 Principal accounting policies (extract) (h) Deferred stripping (note 14) In open pit mining operations, overburden and other waste materials must be removed to access ore from which minerals can be extracted economically. The process of removing overburden and waste materials is referred.

Overburden - Environment | McArthur River Mine

Identifying the ore, overburden and the different types of rock within it, is important for both the mining operation and environmental protection. Our geologists check each stage of mining using extensive studies, geochemical testing, maps, surveys and samples.

Overburden Removal - Surface Mining - SlideShare

Jul 21, 2017 · Power Shovels Two types ofmining shovels currently in use are stripping and quarry. The two machines differ mainly in the duty they perform. A stripping shovel is associated almost exclusively with coal mining for overburden removal. The stripping shovel places the overburden beside itself in the mined out area.