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2 Mining Methods

In each of these mining methods, various earth-moving equipment including shovels, dozers, hauling trucks, and loaders are used to remove and transport the ore However, the first step is to loosen the rock in the ore body so that it can be moved and processed Blasting and grinding equipment are used to accomplish this task...

What are the negative effects of open

Depends on the nature of the orebody and mineral assemblage 1 Huge hole left in the ground It might be useful though for something Ie hydro pumpstorage in Queensland 2 Acid generation and toxicity 3 Lower level access potentially for mining....

Topic 5: Mining Methods

Nov 02, 2011· Table : Subdivided surface mining methods (Bohnit, 1992) Method Subclass Method Mechanical excavation Open-pit (or Open-cut or Open-cast) mining Terrace mining Strip (flat terrain) mining Contour strip (hilly terrain) mining Auger Mining Glory Holing Quarrying Aqueous Placer Panning Sluicing Dredging Hydraulic Mining Solution Heap Leaching ....

Reading: Open

Open-pit mining, or open-cast mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow This form of mining differs from extractive methods that require tunneling into the earth, such as long wall mining...

Cast Blast Design

Explosive cast blasting has seen widespread use in recent years It is as much a method of pit design and equipment utilization as it is a method of blasting Cast blasting is a type of blast design which utilizes the surplus explosive energy to move overburden material across the pit...

US4589700A

The present invention relates to a combination of open cast strip mining and auger mining of thin seams of hydrocarbonaceous deposits In this mining method, a first working pit is stripped to expose the deposit, the hydrocarbonaceous material extracted and the exposed deposit seam face of at least one highwall is auger mined A second and successive working pits are opened parallel to but ....

Explosives

Explosives - Mining Types , In one underground mining method, the coal is blasted off the bed without any undercutting to help break it down , Cast blasts will have the largest deviation from ....

Opencast Mining

The open pit or open cast mining method is the obvious choice for a property with a wide area of mineralization exposed or existing close to the surface and continuing to greater depths The open pit exposes the orebody from the surface by separate removal of ore and associated waste rocks...

Mining Methods

Surface mining Surface mining is used when deposits of the mineral or ore are found near the surface, where the overburden (gravel and sand) is relatively thin It is a broad category as it includes different types of mining methods such as strip mining, open-pit mining, mountaintop removal and dredging...

Basics of an open pit mine

The planning of an open pit mine is, therefore, basically an exercise in economics, constrained by certain geologic and mining engineering aspects A bench may be defined as a ledge that forms a single level of operation above which mineral or waste materials are mined back to a bench face...

(PDF) Mining Methods: Part I

Solution mining includes both borehole mining, such as the methods used to extrac t sodium chloride or sulfur , and leaching, either through drillholes or in dumps or heap s on the surface 2 ....

Coal mining

Coal mining - Coal mining - Choosing a mining method: The various methods of mining a coal seam can be classified under two headings, surface mining and underground mining Surface and underground coal mining are broad activities that incorporate numerous variations in equipment and methods, and the choice of which method to use in extracting a coal seam depends on many ,...

Coal mining

When coal seams are near the surface, it may be economical to extract the coal using open cut (also referred to as open cast, open pit, mountaintop removal or strip) mining methods Opencast coal mining recovers a greater proportion of the coal deposit than underground methods, as more of the coal seams in the strata may be exploited This equipment can include the following: Draglines which ....

Mining Terms

Open Cast Mining Open Pit Mining Strip Mining Quarry Mining Placer Mining Some Examples for Underground Mining Important Terms for Surface Mining Open Pit Mine (metals) Bench: is a ledge which forms a single level of operation where ore and waste are excavated...

(PDF) Mining Methods

Monitoring of the blasted block size distribution (BBSD) is an important part of the mining process Existing image processing methods for measuring the BBSD are unable to operate fully in areas ....

11 PHASES OF A MINING PROJECT

The first way in which proposed mining projects differ is the proposed method of moving or excavating the overburden What follows are brief descriptions of the most common methods 1131 Open-pit mining Open-pit mining is a type of strip mining in which ,...