mining overburden

Mining Overburden

Overburden - Wikipedia

In mining, overburden (also called waste or spoil) is the material that lies above an area that lends itself to economical exploitation, such as the rock, soil, and ecosystem that lies above a coal seam or ore body. Overburden is distinct from tailings, the material that remains after economically valuable components have been extracted from the generally finely milled ore. Overburden is removed during surface mining, but is typically not contaminated with toxic components. Overburden may also be used to restore an ex…

Overburden | geology | Britannica

In coal mining: Contour strip mining …method consists of removing the overburden above the coal seam and then, starting at the outcrop and proceeding along the hillside, creating a bench around the hill.

Overburden - an overview | ScienceDirect Topics

Fig. 5.6 shows a typical conceptual model ( Peng, 2006) that divides the overburden into four zones: caving, fractured, continuous-deformation, and soil zone. The caved zone refers to the strata that will break into irregular shapes of various sizes. It can extend up to two to eight times the mining height.

Mining Contractor Services: Overburden Removal, limestone ...

Mining Contractor Services provided included are: Overburden Removal, limestone mining, Drill and Blast, and Crushing and Screening.

Overburden - Environment | McArthur River Mine

Overburden is the natural rock and soil that sits above and around the ore body. It is not subject to any stone processes at the mine but needs to be removed to allow access to the ore. For every tonne of ore we mine, there are around seven tonnes of overburden which are moved to an area called the Overburden Emplacement Facility (OEF), or ...

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

That means mining 1 cubic meter of ore would require mining 3 cubic meters of overburden. The stripping ratio of a deposit may be used, in part, to gauge how profitable it may be.

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.

(PDF) Mine Overburden Dump Failure: A Case Study

Stability of mine overburden (OB) dump slope has been a major concern over the years and needs a proper design for safe mining operation and economy of project.

Mining Flashcards | Quizlet

In mining, overburden (also called waste or spoil) is the material that lies above an area that lends itself to economical exploitation, such as the rock, soil, and ecosystem that lies above a coal seam or ore body.

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 ton of ore, for example, 1.5:1 as opposed to 3:2.

Glossary of Mining Terms - Coal Education

Overburden – Layers of soil and rock covering a coal seam. Overburden is removed prior to surface mining and replaced after the coal is taken from the seam. Overcast (undercast) - Enclosed airway which permits one air current to pass over (under) another without interruption. P. Panel - A coal mining block that generally comprises one ...

Mine Tailings Disposal Methods

Overburden swelling, mining technique used, and the age of the mine are factors which determine availability of space for backfilling. Overburden originating from a single open pit mine may be segregated depending upon stone or physical characteristics.

Overburden - definition of overburden by The Free Dictionary

overburden - the surface soil that must be moved away to get at coal seams and mineral deposits. land, soil, ground - material in the top layer of the surface of the earth in which plants can grow (especially with reference to its quality or use); "the land had never been plowed"; "good agricultural soil".

Overburden | Definition of Overburden at

Every shilling with which they overburden the inferior number, is a shilling saved to their own pockets. Naturally Mr. Fisher must not overburden or imperil his bill, or interfere with the labor necessary for the …

Equipment Youll Find at a Typical Surface Mine

Jul 31, 2019 · The typical surface mine (quarry) has lots of specialized equipment, and each piece has a name that new miners may not be familiar with. To help you get up to speed fast, we’ve provided a list of common surface mining equipment, along with images and explanations of the equipment’s function and operation. Not only did […]

Open Pit Mining Operations

Open Pit Mining Operations Previous Next The previous topic has established that surface mining operations include several main activities that include the ore extraction or mine of the material, the overburden excavation and removal, the overburden transport, the waste disposal, the low grade material pile and transport for future treatments ...

Mine Overburden Dump Failure: A Case Study | SpringerLink

Nov 27, 2013 · In any open cast mine, the management of stripped spoil during mining is crucial to the mine’s successful operation. The improper management of the overburden (OB) dump can result in stability issues which may affect safety and production of the mine. Various literatures have reported the failure of open pit dumps and the consequences in loss of life, production and impact on neighbouring ...

Overburden | Definition of Overburden by Merriam-Webster

Overburden definition is - to place an excessive burden on. How to use overburden in a sentence.

Study 33 Terms | Earth Science Flashcards | Quizlet

is similar to open-pit mining. It is used to collect mineral deposits that are close to the surface in horizontal beds. 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.

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