What are two disadvantages of deep shaft mining in ...

Nov 13, 2018· We go for deep shaft mining when the deposit lies at a greater depth or when mining through opencast method has reached the economical pit limit i.e. it is no longer profitable to mine through open cast system. A few disadvantages of deep shaft sy...

OPEN CAST MINE PLANNING - Mining and Blasting

Surface mining Advantages 1) Higher % recovery of coal. 2) No problems of roof control, ventilation, etc, & less hazards & dangers 3) Early extraction & Quick return of capital 4) Large output possible 5) High OMS possible 6) Artificial lights needed only after dusk hours. 7) High degree of mechanization possible. Disadvantages: Uneconomic at ...

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.

Advantage And Disadvantage Of Open Cast Mining

open cast mining disadvantages - India. open cast mining disadvantages. open cast mining disadvantages is one of the products of our company main products sold,it is …

opencast mining disadvantages

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.

What Are the Disadvantages of Mining? | Reference.com

The disadvantages of mining include harm to air pollution, water pollution, loss of usable land, destruction of animal habitat, and harm to local communities and the miners themselves. While mining produces the resources needed for fuel, electronics, and other items as well as jobs, companies often don't factor the harm mining can do into ...

disadvantages of open cast mining wikipedia - BINQ Mining

What are the advantages of open cast mining – The Q&A wiki. Advantages Jobs will be available for the people of the are. Disadvantages Co2, Global warming,Smoke, dust, Bad atmosphere around the area, rising sea level. »More detailed

What Are the Disadvantages of Opencast Mining? - Reference

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 pollution.

Advantages and disadvantages of open pit mining ~ LORECENTRAL

Apr 02, 2018· Disadvantages of open pit mining. One of the main disadvantages of this type of mining operation is the environmental impact it causes. Since cyanide, mercury and sulfuric acid are used to remove the wastewater, groundwater and air are contaminated as toxic dust . This is absorbed by animals and plants.

Open-pit mining - Wikipedia

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.. This form of mining differs from extractive methods that require tunnelling into the earth, such as long wall mining.Open-pit mines are used when deposits of commercially useful ore or rocks are found near the surface.

What are the advantages of open cast mining - Answers

Advantages Jobs will be available for the people of the are. Disadvantages Co2, Global warming,Smoke, dust, Bad atmosphere around the area, rising sea level.

what is the disadvantage of opencast mining

advantages and disadvantages on open cast mining – SZM. open – advantages and disadvantages of deep cast mining. open pit, open cast or open cut mining is a surface mining technique of extracting rock or for minerals that occur deep below the surface where the overburden is thick or the mineral occur.

What are some of the most important disadvantages and ...

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...

disadvantages of open cast mining on workers « BINQ Mining

Keywords: Mining method, surface mining, open pit mining, open cast mining, placer … description includes a comparison of the advantages and disadvantages of surface …. paid more per hour than a worker doing a similar job on the surface.

Open Pit Mining Disadvantages | Mineral Production ...

4. Disadvantages of open pit mining. However, disadvantages when compared to Underground Mining also exist: Very large amounts of waste rock are mined. This creates costs as well as environmental issues with waste rock disposal; Major disruption of surface: pit footprint, waste dumps. High visual impact, especially strip mining.

LECTURE -2|| OPENCAST AND UNDERGROUND MINING|| ADVANTAGES …

Nov 21, 2018· In this video we talk about types of mining method and advantages and disadvantages of them. Do subscribe my channel if you think we are doing a great job. Like, comment and share our video as ...

Opencast Mining (Quarrying): Methods, Advantages ...

Opencast mining is also known as open-put mining, open-cut mining, surface mining and also as strip mining, the later term being commonly used in the U.S.A. for opencast mining of coal. The overburden and the mineral, coal, are excavated in long strips of a few metres thickness and hence the operations are termed strip mining.

What is the difference between opencast & underground mining?

Mining is something quite extraordinary. When we think of mining we think dusty, dark, unflattering settings. In contraire it is quite in fact the opposite. So what is open cast mining? Open cast mining is the removal of rocks or sediments that contains minerals, with economically important elements. The advantages of open cast mining:

The many advantages of underground mining

Apr 27, 2015· Enhancing its opencast operations with an underground mining could potentially increase the Kun-Manie mine site by at least 19 percent. Choosing between open-pit mining and underground mining is a decision that every mining company makes, …

Open Cast Mining Advantages Disadvantages

advantage and disadvantage of open cast mining -FDP. Open Cast Mining Advantages And Disadvantages. Open Cast Mining Advantages And Disadvantages. Shanghai Shibang Machine Co., Ltd. is a high technology, engineering group. Read more

Advantages and disadvantages of open pit mining

Advantages and disadvantages of open pit mining. Apr 02 2018 · Table of Contents What is open pit miningAdvantages and disadvantages of open pit miningTypes of opencast minesDisadvantages of open pit mining What is open pit mining Open pit mines are those mining operations that take place on the surface unlike the underground mines This is possible when the reservoir sprouts on the surface or ...

What are the advantages of underground mining - Answers

The advantages of surface mining are: * It is cheaper to extract the ore or metal than underground mining * Less chance of workers dying from toxic fumes, therefore it is safer unlike underground ...

What are the advantages of open-cast mining? - Quora

Jan 15, 2018· Open-cast mining has several advantages compared to underground mining, these are:- * Open-cast allows for high tonnages to be moved hence economies scale * Safe as workers are not working under disturbed roof * Open-cast trucks have higher payloa...

Surface Mining Methods and Equipment

UNESCO – EOLSS SAMPLE CHAPTERS CIVIL ENGINEERING – Vol. II - Surface Mining Methods and Equipment - J. Yamatomi and S. Okubo ©Encyclopedia of Life Support Systems (EOLSS) SURFACE MINING METHODS AND EQUIPMENT J. Yamatomi and S. Okubo University of Tokyo, Japan Keywords: Mining method, surface mining, open pit mining, open cast mining, placer mining, solution mining…

Open Cast Mining Advantages

Open Cast Mining Advantages. Previous Next. In the previous topic, we saw which are some of the advantages that can make the surface open pit mining methods superior method compared to the underground mining. However, underground mining has its own advantages. And finally, the ultimate decision to mine from the surface or from underground comes ...

Environmental impact of mining - Wikipedia

Environmental impacts of mining can occur at local, regional, and global scales through direct and indirect mining practices. Impacts can result in erosion, sinkholes, loss of biodiversity, or the contamination of soil, groundwater, and surface water by the chemicals emitted from mining processes. These processes also have an impact on the atmosphere from the emissions of carbon which have ...

What are the disadvantages of underground mining - Answers

Underground mining is very expensive to conduct. It requires management of a fresh air supply, along with drainage. Underground mining can only remove a portion of the mineral present (the rest is ...

The Advantages of Open Pit Mining | Sciencing

Open pit mining does offer some advantages over traditional deep shaft mining. Pit mining is more cost effective than shaft mining because more ore can be extracted and more quickly. The working conditions are safer for the miners because there is no risk of cave in or toxic gas. Open pit mining …