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"EPA does business with an open door," McLerran said. ... An open-pit mine. ... was part of a presentation to then-EPA Administrator Lisa Jackson explaining the pros and cons of using the ...

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Sep 08, 2015· Find out some pros and cons of underground mining in the latest Operations Illustrated. Contributed. September 8, 2015. By Mary Foster, Contributing Editor ... A mine with a thinner strata will not have the roof height needed to accommodate screens. "Honestly, most producers will crush down to five, six, eight inches-minus, and then convey to ...

What are the pros and cons of open pit mining? THANK YOU ...

May 20, 2010· Best Answer: Open-pit mining, also called strip-mining: Pros -- It's easy and cheap for the mining companies, which does translate into a lower cost to you, the consumer Con -- It's devastating to the environment, not just in the physical removal of what is sometimes a miles-wide, thousand-foot-deep hole in ...

Minerals and Mining Flashcards | Quizlet

Open-pit mining. the recovery of materials from an open pit in the ground. ... Deep Surface Mining Pros ... Deep Surface Mining Cons - spoil often left in mine so people are not as affected by it on the surface, but it can still leak to the surface as toxic gases.

Recovery of Copper by Solution Mining Methods - AZ

Recovery of Copper by Solution Mining Methods 1 Recovery of Copper by Solution Mining Methods David F. Briggs, Economic Geologist 3514 West Blacksill Drive Tucson, Arizona 85741 Phone - 520-744-4195 Cell - 520-784-3954 Introduction Solution mining is a mining practice that employs solutions (i.e. water or dilute acid) to recover a desired commodity

Oil Sands Mining | Student Energy

Open pit mining is similar to coal mining operations – large shovels scoop the oil sand into trucks that then take it to crushers where the large clumps of earth are broken down. This mixture is then mixed with water to form a slurry that is transported to a plant, where the bitumen is separated from the other components in a froth process.

Open-pit mining | Britannica.com

mining: Open-pit mining Deposits mined by open-pit techniques are generally divided into horizontal layers called benches. The thickness (that is, the height) of the benches depends on the type of deposit, the mineral being mined, and the equipment being used; for large mines it…

Strip Mining vs Open pit mining : mining - reddit.com

Can someone explain the difference between the two and pros/cons? Not much I could find on the internet that could compare the two together ... in Canada, if you only have worked in an Open Pit mine? 2 · 4 comments . Underground Photography. 6 · 8 comments . Getting in to a mining job. 0 · 14 comments ... Strip Mining vs Open pit mining ...

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Sep 06, 2016· Underground Mining is a method of Mining, where the mineral is extracted without removing the top soil and rocks. In this way we do not disturb the surface feature such as forest, agriculture land, rivers and residential areas. The major disadvant...

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Feb 13, 2016· Shallow mineral or coal deposits can be economically mined by open-pit or strip mines. However, with deeper mineral or coal deposits it becomes very costly to remove a great deal of overburden in these kinds of settings. So, in these cases underground mining is more cost effective. The downside is that human health and safety are at greater ...

Open Pit Mining by Madison Bangs on Prezi

Open Pit Mining Opinion The Consumer Benefits (the cost of this type of mining is lower, which impacts the consumer) Contamination of the Environment (this form of mining destroys landscape and can pollute nearby soil and water systems) Open Pit Mine after a landslide had taken

What Are the Advantages of Open-Pit Mining? | Reference.com

Advantages of open-pit mining include a lower cost compared with other methods and a higher safety level. Open-pit mining is also better suited to quarries containing smaller amounts of …

What Are the Disadvantages of Opencast Mining ...

What Are the Disadvantages of Opencast Mining? Opencast mining, also known as surface mining or strip mining, has disadvantages that include disturbance of the environment and local ecosystems, exposure of radioactive elements and contamination of freshwater sources. The use of heavy machinery and blasting techniques also create environmental ...

what are the pros of open-pit mining? | Yahoo Answers

Jan 26, 2009· Best Answer: Open-pit mining (as opposed to underground mining) has several advantages:- 1) Low cost of recovery - large trucks can enter the mine, get filled up with rock from a large excavator and drive away to the processing plant. 2) No need to leave stability pillars, necessary to hold up underground ...

Open pit mining pros & cons - ehow.co.uk

Open-pit mining is a type of mineral or rock extraction that does not necessitate tunnelling into the earth. When a desired mineral or rock is near the surface, companies typically opt for open-pit mining due to its lower costs and increased efficiency. Open-pits are typically dug in tiers and with ...

open pit mining disadvantages - YouTube

Aug 29, 2016· Brownstone Mining, Steps to Having a Working Gold Mine, It is not process of gold mining open pit pros and cons disadvantages of open pit mining and disadvantages of open pit small scaleng. Open ...

Placer Mining Pros And Cons - greenrevolution.org.in

Open Pit Mining Pros & Cons | eHow. Open Pit Mining Pros & Cons. Open pit mining -- or strip mining -- is an extraction process for ore or fossil fuels that takes place at the surface of a mining site.

open pit mining pros and cons - Mining Machine, Crusher ...

The Advantages of Open Pit Mining (with Pictures) | eHow. Open pit mining does offer some advantages over traditional deep shaft mining. Pit mining is more cost ... Open pit mining is the preferred method for mining gold, silver, and uranium. This type of ... You May Like. Open Pit Mining Pros & Cons. More details » Get Price

What are the pros and cons of subsurface mining? - Quora

Advantages of underground mining: *less surface disturbance *less environmental disturbance *less waste mined per tonne of ore *ability to mine resources that are not economic as a surface mine *cheaper to set up mine development for deep ore depo...

Open Pit Mining Pros & Cons | Sciencing

Open pit mining -- or strip mining -- is an extraction process for ore or fossil fuels that takes place at the surface of a mining site. Worldwide, 40 percent of mining occurs at the surface, according to Greenpeace International. Compared with underground mining, surface mining is much more efficient.

Economic Impacts of Open Pit Mining | Bizfluent

Bingham Canyon Mine supplies 18 percent of the United States' refined copper, making it the second-largest copper producer with substantial amounts of gold, silver and sulphuric acid as byproducts. Reserves are estimated to last until 2020 with additional mineral resources potentially extending open pit mining in the area until to 2032.

What are pro's and cons of open pit mining - answers.com

What are pro's and cons of open pit mining? some pros are: easier extraction, costs less, the mechanichal advantage, the safer working conditions, and the cosumer benifits. some cons are the ...

The effects of mining industry in the Philippines ...

Mining Industry in the Philippines has been a controversial issue once again, as the Department of Environment and Natural Resources (DENR) secretary Gina Lopez advocates the total ban of mining for responsible and sustainable mining in the country. Mining …

Open Pit Mining Pros & Cons | Culture & Society

Open pit mining is the process of extracting ore, rocks or any valuable material from the ground by digging. Some people call open pit mines quarries. Most open pits are designed in a step-like structure, with each step (sometimes called ledge or bench) dug deeper into the earth to reach the area to be mined. The steps include access

Environmental Science- Mining Flashcards | Quizlet

Pros and cons of Open Pit mining It is large enough for men and machinery to move about, is cost efficient and safe compared to open shaft mining. Cons: Leads to habitat loss, creates large holes in the ground and those holes allow water to drain into them where they could become acidic.

The Pros And Cons To Copper Mountain Mining Corp.

Dec 05, 2017· The Pros And Cons To Copper Mountain Mining Corp. Dec. 5, 2017 2:13 PM ET | ... 2017, the open-pit mine has a useful life of 16 years, which is …

The many advantages of underground mining - born2invest.com

Apr 27, 2015· Choosing between open-pit mining and underground mining is a decision that every mining company makes, but it is not based on the miner's whim and predilection. Selection always depends on the geometry properties of the deposit, its position, location, and type. Generally, startup explorers and miners begin with open-pit mining because it is ...

Basics of an open pit mine - mine-engineer.com

Open pit mines can be used in coal mining, and they are used extensively in "hard rock" mining for ores such as metal ores, copper, gold, iron, aluminum, and many minerals. In a open pit coal mine, the pit bottom would be the bottom mined coal seam elevation, since it is usually feasible to extract multiple seams when surface mining coal.

Advantages and disadvantages of open pit mining - LORECENTRAL

Apr 02, 2018· Advantages and disadvantages of open pit mining. Open pit mining is profitable when the deposit is not very deep or when the terrain is sandy or delicate, so that underground mining is not possible. Labor costs are lower, both in excavation and transportation, and allow the use of …

What are some pros and cons of mining? | Socratic

Jun 08, 2017· List of major aspects below: In a nutshell, although it is an undeniable fact that mining affects our world enormously, we ought not to demonize its practice while its benefits are constantly enjoyed by the large majority of people. PROS: I. Economic incomes. enormous earnings by exportation, private contracts II. Job offers/opportunities for locals.