stripping overburden line mining

Surface Coal Mining Methods in Australia

strip mining operations. In most cases the overburden and coal cannot be excavated without prior blasting operations. Conventional drill and blast practices are used in both the overburden and coal, with each of these being mined in a separate cycle. Each layer is cleared and prepared, surveyed, drilled, loaded with explosives,

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Lecture 4 Calculating Stripping Ratios for Area Strip ...

In surface mining, stripping ratio or strip ratio refers to the amount of waste (or overburden) that must be removed to release a given ore quantity. It is a number or ratio that express how much waste is mined per unit of ore. The units of a stripping ratio can vary between mine types. For example, in coal mining the stripping ratio is commonly referred to as volume/weight.

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Surface Mining Techniques used in the Oil Sands | Oil ...

The open pit mining operations for the JEB and Sue A, B and C deposits would involve overburden stripping and waste rock mining, followed by mining of the ore zones. EurLex-2 Consequently, as a preventive measure, the height and slope of overburden - stripping and extraction faces must be appropriate to the nature and stability of the ground ...

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"Giant Shovel on I

1 In surface mining operations, entities may find it necessary to remove mine waste materials ('overburden') to gain access to mineral ore deposits. This waste removal activity is known as 'stripping'.

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Usibelli Coal Mine

Strip mining is a mineral-extraction process in which a layer or seam of undesired material (called "overburden") is removed from the surface of an area to allow efficient access to a desired material existing underneath the layer being stripped.

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stripping overburden limestone mining

along the strip to the other end. At the completion of each strip the dragline relocates (dead head) to start of th e strip and commences on the next strip. Access ramps are left through the overburden dump for access for coal mining. The key dragline planning parameters are du mp height, dig depth and dump radius. As overburden depths increase ...

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Stripping ratio

Stripping Overburden Line Miningstripping overburden limestone mining Mining Activities In The Open Mine Technology Industry Of Data mining and information about Basic as a preparation Mining in South Dakota Mining in South Dakota Granite and limestone are quarried 2) Strip-mining is the process The material that is removed is called overburden ...

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History of Illinois Coal Mines

Overburden removal in surface mining. The HS 8300 is deployed for top soil removal overlying the mineral deposits and subsequently refilling of the mined and empty strip. THE DRAGLINE EXCAVATOR Variable boom configurations . Modular boom sections allow for a certain degree of flexibility in terms of strip width and digging depth when choosing ...

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Overburden Stripping using Dredge and Draglines

in strip mining makes the impact on the environment especially acute. Surface mining (another name for "strip ... or draglines, depending on the amount of overburden and the type of mining. 4. After removing the overburden, the exposed coal seam is usually fractured by blasting. ... extracts the coal and transports it to a power plant or to a ...

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IAS 16 — Stripping costs in the production phase of a mine

Overburden Removal. We move overburden, whether it be 50,000 CY or 5 million CY. We move it for the price we quote, without change orders or surprises. Our experienced stripping crews are guaranteed to stay ahead of your mining activities. Learn More →

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Mine Safety Video Mining Week 2016 | Guyana Geology and ...

Isibonelo Colliery typically follows two approaches during stripping and benching, namely: Method 1: Is a single bench operation where all soft overburden is stripped by truck and shovel equipment and the hard overburden is bench stripped by the dragline. Some hard overburden can also be stripped in the isolated deep overburden blocks.

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Surface mining planning and design of open pit mining

overburden costs 45 cents per cubic yard to move what is the maximum economic stripping ratio $5.00/ 0.45 = just over 11 cubic yards per ton Called a Break Even Stripping Ratio Complexities Warning Units of Stripping Ratio depend on convenience of the industry Coal overburden is normally light and machines are limited by volume in cubic yards ...

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Overburden definition — AccountingTools

Aug 26, 2010· In surface mining operations, entities may find it necessary to remove mine waste materials ('overburden') to gain access to mineral ore deposits. This waste removal activity is known as 'stripping'. There can be two benefits accruing to the entity from the stripping activity: usable ore that can be used to produce inventory and improved access ...

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Major Mines & Projects

The current surface mining practices in West ia (WV) consist of conventional mining unit operations including: drilling, blasting, digging, loading, haulage, and dumping. Draglines are used in some mines for stripping and direct dumping of overburden material into excavated area. The WV ranks second in the nation for explosives

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Major Mines & Projects

Stripping (overburden removal) and Mining (extraction of pay dirt for processing) (i) Stripping and mining by hydraulicking only ("bare dredge" operation) • Hydraulicking (for stripping) should only be undertaken when the operator of the hydraulic monitor ("jetman"), "marack man" and other workers in the mining pit are positioned ...

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Considerations Some Technical and Business Dragline or ...

Books such as "Elements of Practical Coal Mining" and SME's "Surface Mining" were specifically referenced Stripping Ratio as a Fundamental • Ability to surface mine depends on the value of the ore being high enough to offset the cost of Overburden Removal – Stripping Ratio determines relative amounts of each to be moved • If ...

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In

"Underground Mining" was the norm though, and most of the mines just did not consider mining the coal using the "Strip Mine" process. This process consist of moving all of the material (Overburden) from the top of the coal with a "Stripper" or other "Earth Moving" machines.

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overburden stripping

overburden costs 45 cents per cubic yard to move what is the maximum economic stripping ratio $5.00/ 0.45 = just over 11 cubic yards per ton Called a Break Even Stripping Ratio Complexities Warning Units of Stripping Ratio depend on convenience of the industry Coal overburden is normally light and machines are limited by volume in cubic yards ...

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How to calculate stripping ratio?

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.

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Overburden management in open pits: options and limits in ...

The open pit mining operations for the JEB and Sue A, B and C deposits would involve overburden stripping and waste rock mining, followed by mining of the ore zones. EurLex-2 Consequently, as a preventive measure, the height and slope of overburden - stripping and extraction faces must be appropriate to the nature and stability of the ground ...

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Overburden Removal | Turner Mining Group

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 …

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overburden stripping

applicability of open-pit mining is expected to be limited to situ-ations where the overburden thickness is less than 150 feet (ft) and the stripping ratio is close to 1:1 (Speight, 2012). Room-and-pillar mining involves excavations of large blocks of oil shale (rooms) while leaving pillars behind to support the mine roof.

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