Apr 20, 2015· Strip mining accounts for about 40 percent of the world's coal mines but in some countries, such as Australia, open cast mines make up 80 percent of mines. Even though it's highly destructive, industry often prefers strip mining as it requires less labour and yields more coal than underground mining.
Here are the pros and cons of strip mining to consider. Strip Mining Pros to Consider . 1. It is very cost effective. Mining happens from the first moment work begins with a strip mine. There's no need to develop groundbased infrastructure. If you've got a shovel and mining rights, then you can strip mine right now. 2. It offers huge recovery rates.
Open pit mining entails removing minerals by excavating a "pit" into the earth's surface. Open pit mining is quite different from underground mining, which utilizes tunnels dug below the earth's surface. Open pit mining is common in the extraction of copper, iron, gold, molybdenum, sand, gravel, diamonds, coal, gypsum, marble and limestone.
A: .open pit strip mining advantage and disadvantages,Opencast mining, also known as surface mining or strip, open cast mining advantages disadvantag Advantages of openpit mining, Project introduction Get Price >Advantages And Disadvantages Of Openpit, solar evaporation salt plants; granite crushing plants in warangal; eljay rollercone crusher for sale; mockups,.
Open pit mining disturbs larger areas than underground mining, and thus has larger visual and physical impacts. As the amount of waste rock in open pit mines is commonly two to three times the amount of ore produced, tremendous volumes of waste rock are removed from the pits and deposited in areas nearby.
Full Answer. Another advantage of openpit mining is that it allows miners to get rid of lowquality materials quickly and easily. This is known in the industry as high selectivity, and it is one of the most important advantages of openpit mining. Other methods, which have a lower selectivity, make it more difficult to filter out the lowquality materials.
An open pit mining operation virtually eliminates any biologic life at the surface. Vegetation is stripped, and the surface at the dig site is left completely barren. Without replanting and restoring the ecosystem, a strip mining site can take decades to recover.
Apr 02, 2018· The Witwatersrand gold mine in South Africa is an excellent example of underground mining that exploits gold from ancient rocks at depths of up to 4 km underground. What is open pit mining On the other hand, openpit mining is the most common mining and ranges from very lowpriced minerals to finely disseminated gold deposits.
Jan 19, 2009· Best Answer: Adavantages; Easier access to materials, Easier to transport materials to the destination, Less hazards in regards to mining in tunnels or underground. Disadvantages; Alot more disel fuel burned to transport goods, Blasting is also required making it highly dangerous to anyone around and the atmosphere. All of the ones i can think of..
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 .
Surface mining. Openpit mining often (but not always) results in a large hole, or pit, being formed in the process of extracting a mineral. It can also result in a portion of a hilltop being removed. In strip mining a long, narrow strip of mineral is uncovered by a dragline, large shovel, or similar type of excavator.
Open pit mining, copper mine tailings, leaching products, and deposits of toxic metals in the environment often raises concerns and sometimes public outrage. In addition, consumers may fear that copper alloys utilized as antimicrobial surfaces in food production will lead to copper toxicity in humans.
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 .
Openpit mining causes changes to vegetation, soil, and bedrock, which ultimately contributes to changes in surface hydrology, groundwater levels, and flow paths. Additionally, openpit produces harmful pollutants depending on the type of mineral being mined, and the type of mining process being used.
Jan 16, 2018· The cost of open pit mining is generally 50% 75% lower than the cost of underground mining, which is conducive to largescale exploitation of lowgrade ore. The main drawbacks of open pit mining are:the occupation of land, the surface is destroyed, the environment is contaminated.