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The Jagersfontein Mine – operating between 1888 and 1971 This was hand-excavated to 201 m (660 ft) by 1911 and the hand-dug pit was sightly larger than the Big Hole The Palabora Open Pit – mechanically excavated by Palabora Mining Company in Phalaborwa Limpopo Province The pit is 898m deep and 1846m across on top Voorspoed diamond mineGet price


Open Pit or Open Cast Mining

Mining is a practical industry that seeks efficient ways to extracts mineral wealth from the ground During the nineteenth century precious metals deeper than about three hundred feet called for underground drift or hardrock mining Occasionally ore bodies sufficiently close to the surface made open pit or open cast mining practical Get price


What is the difference between opencast mining and

What is the difference between opencast mining and shaft very close to the surface In the open-cast mining different minerals are taken out by removing the surface layer Open-cast mining is famous for coal mining in India and many other The three types of mining -strip mining open pit mining and shaft mining What are two types Get price


What's The Difference Between Open Pit Mining

10-12-2012Best Answer Open pit mining is just digging a large area like a quarry coal taken out from the pit Underground mining is where they sink shafts into the ground tunnels run off from that point Strip mining is a form of surface mining The ore is Get price


Haul Road Design Guidelines

mining costs and subsequently higher profits Haul roads and ramps are the lifeline of the open cut mine Road design must accommodate a number of factors and expected weather conditions the largest vehicle on site and the speed of operations are taken into account in the design process Get price


Mining Terms

Open Cast Mining Open Pit Mining Strip Mining Quarry Mining Placer Mining of operation where ore and waste are excavated Berm is a horizontal shelf or ledge built in to a sloping wall of an open pit or quarry for protection under level An inclined rubber wheeled access opening between horizontal openings at different Get price



13-10-2019Consequently it is mined in open pits requiring only a minimal removal of overburden Bauxite beds are blasted loose and dug up with power shovel or dragline and the ore is transported by truck rail or conveyor belt to a processing plant where it is crushed for easier handling Get price


AMIT 129 Lesson 2 Open Pit and PPE

Open-Pit Mining Open pit mining is the process of mining any near-surface deposits by means of a surface pit excavated using one or more horizontal benches Open pit mines are often used in mining metallic or nonmetallic deposits and more sparingly in coal and other bedded deposits Get price


Glossary of Mining Terms

Open order - An order to buy or sell stock which is good until cancelled by the client Open pit - A mine that is entirely on surface Also referred to as open-cut or open-cast mine Option - An agreement to purchase a property reached between the property vendor and some other party who wishes to explore the property further Get price


13 Pit Wall Angles and Bench Width – How Do They Relate?

The wall of an open pit wall will consist of a series of stacked benches Geotechnical engineers will normally provide the pit slope design criteria based on the inter-ramp angle ("IRA") for various sectors around the pit The IRA represents the toe-to-toe slope angle as shown in the diagram below The inter-ramp angle can beGet price


underground mining vs open pit mining

19-4-2011underground mining vs open pit mining 09DBEAR Loading Unsubscribe from 09DBEAR? Cancel Unsubscribe Working Subscribe Subscribed Unsubscribe 2 Loading Pioneering Underground Mining - Duration 8 48 JoyMiningMachinery 860 490 views 8 48 Top 10 most Horrifyingly Mysterious Lakes in the World - Duration 10 16 Get price


Underground Mining Methods — New Pacific Metals

Many large-scale open-pit operations have plans to progress into block caving operations over time including Oyu Tolgoi and Grasberg This mining method is typically used in situations where the orebody is both large and steeply dipping and because of the depth below surface is not suitable for surface mining methods Get price


What are the main methods of mining?

There are four main mining methods underground open surface (pit) placer and in-situ mining Underground mines are more expensive and are often used to reach deeper deposits Surface mines are typically used for more shallow and less valuable deposits Get price


(PDF) Mining Methods

The aim of this paper is to present a detailed geological research of the mining subsidence induced by exploitation of the Germunde Coal Mine (Douro Coalfield NW of Portugal) The authors analyse and discuss the different lithological and structural aspects that control the location of mining subsidence discontinuities appearing at ground surface Get price


How does strip mining differ from subsurface mining

Do a search in Socratic for this question Is strip mining necessary? and see if this answer helps with your question But briefly strip mining is economically necessary to extract some mineral resources such as coal when the overburden is not too thick In such cases an underground mine would be costly and probably unsafe Get price


What Is Open Cast Mining?

Open cast mining is a type of surface mining in which mineral resources are removed from the earth through large holes or pits dug into the surface The term open cast mining is used most commonly in Great Britain In the United States open cast mining is usually called open-pit or open-cut mining Get price


What is mining?

What is mining? Mining is the extraction (removal) of minerals and metals from earth Manganese tantalum cassiterite copper tin nickel bauxite (aluminum ore) iron ore gold silver and diamonds are just some examples of what is mined Why mine? Mining is a money making business Get price


what is the difference between mining and quarrying

4-4-2009Best Answer I think quarrying is usually done on the surface of the earth instead of under it Blocks of material are taken whole from the pit like stone marble etc Care is taken to not destroy the blocks when they are cut since it would lower or even ruin their value to builders and sculptors In Get price


What is the difference between strip mining and open pit

like strip mining open-pit mining involves removing the surface layer of soil Miners then use explosives to break up the underlying rock and recover the ore As they dig a deep hole or pit to mine the ore they build roads up on the sides of the pit Trucks carry the ore to the surface Ores of copper and iron are obtained by open-pit mining Get price


Globally optimising open

26-2-2016A mining complex may be comprised of multiple components including open-pit and underground operations Traditional approaches in mine planning do not account for the various components simultaneously leading to under-value solutions Over the last decade some methods have been developed to incorporate multiple components of the Get price



18-8-2008Shaft mining Red Lake Ontario or Witwatersrand South Africa (gold) Quarrying Windsor Nova Scotia (gypsum) or Wilson California (gravel) The difference between an open pit mine and a quarry is that a quarry uses the mined product as is without milling and extraction such as limestone gypsum bentonite gravel etc Get price


Surface mining

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 Get price


What is the difference between strip mining and

In underground mining What is the difference between strip mining and underground mining? Environmental Science Land and Water Use Mining 1 Answer Suren Abreu Oct 10 2016 What are the differences between open pit mining underground mining and strip mining?Get price


Strip Mining vs Open pit mining mining

Open pits are for deposits that are tilted or even vertical Extraction is limited to a relatively smaller area and the mining operation moves down over time To dig deeper the pit also has to be widened over time increasing the ratio of overburden ore Eventually you will have to remove so much overburden that extraction no longer is Get price



coal mining methods their significances (also referred to as open cast open pit mountaintop re moval or strip) mining methods Under favourable conditions between 30 and 5 0 percent of the coal in an area can be recov ered during development of the pillars Get price


difference between open cast mining shaft mining and

difference between open cast mining shaft mining and drilling Open cast mining in which large pits are dug to excavate the ores lying at shallow depths beneath the surface of the earth Minerals that lie near the surface are also dug out by the process of quarrying 2 Get price


Uranium mining

The health effects discovered from radon exposure in unventilated uranium mining prompted the switch away from uranium mining via tunnel underground mining towards open cut and in-situ leaching technology a method of extraction that does not produce the same occupational hazards or mine tailings as conventional mining Get price


difference between open cast mining and shaft mining

1 Open-pit open-cast or open cut mining is a surface mining technique of extracting rock or minerals from the earth by their removal from an open pit or borrow Type Shaft Mining is underground mining for coal and oil Open cast mining is open on earth mining for minerals Get price


What is the difference between an opencast mine and an

6-9-2006Best Answer An open cast is when it's a huge open area (with no roof so you can look in and it lets the sun in) big enough to drive trucks around in Like if the Grand Canyon was a mine (Look up Kimberley's big hole for an idea) Open pit is when it's Get price



INTRODUCTION TO MINING These terms are often used in the industry to differentiate between the fuels metals and nonmetallic minerals The following are the most If the excavation used for mining is entirely open or operated from the surface it is termed asurfacemine Get price

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