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Mining

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leon motsamai

on 11 January 2013

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Transcript of Mining

Mining Mining is a major industry, as are agriculture, forestry and fisheries. Mining is the process or industry of obtaining metals minerals from a mine by using special tools. Miners in the past used tools such as hand shovels, pick axes, carbide lamp, etc. But these days they use modern technology such as explosives, large rock cutting machines, etc. There are two types of methods in mining one of the two methods is surface mining. Surface mining is a mining operation that extracts deposits of mineral resources that are close to the surface. There are many variations of surface mining such as placer mining, strip mining, open pit, mountaintop removal, hydraulic, and dredging. The other method is underground mining. Underground mining is a group of techniques used for the extraction of valuable minerals or other materials from deep inside the earth. This method also comes with several variations of it such as drift mining, slope mining, shaft mining, hard Rock, and Borehole Mining. Types of mining What is mining? placer mining Placer mining is any type of mining that involves raw minerals being deposited in sand or gravel on the surface and are picked up without having to use of dynamite or any tools that are used in mining. This kind of mining is an older form of mining it is one of the easiest technique out of all of the the other variations of surface mining. An example of placer mining is panning (gold mining). Strip Mining Mountaintop removal Hydraulic Dredging Drift mining Drift mining is a method of accessing valuable material, such as coal, by cutting into the side of the earth, rather than tunneling straight downwards. Underground Mining Slope mining Slope mining is a method of accessing valuable material, such as coal. A sloping access shaft travels downwards towards the coal but this method differs from shaft and drift mines, which access resources by tunneling straight down or horizontally. Open Pit Surface Mining Open pit mines are mines that involve digging large open holes in the ground as opposed to a small shafts used in hard rock mining. This method of mining is most often used with minerals like copper. Open pit mines are very large and mostly away from populated areas. Strip mining is similar to open pit mining except the part that says open pit mines are large open holes. It is the practice of mining of a mineral by first removing all of the soil and rock that lies on top of it. MTR (Mountaintop removal) is a relatively new form of coal mining that involves the mass change of earth in order to reach sediment found deep inside the earth about 1,000 feet below the surface. This is literary the removal of a mountain. Hydraulic mining is mining that involves high pressure water. The water is then sprayed on the surface of rock and/or gravel and the water breaks the rock up, dislodging placer deposits, etc. Although dredging is usually used to clear waterways for boats, it can also be a method to recover significant amounts of underwater minerals relatively efficiently and cheaply. Shaft mining Shaft mining is a type of underground mining done by use of a mine shaft. A mine shaft is a vertical passageway used for access to an underground mine. On the surface above the shaft stands a building known as the head frame, which in previous years contained a winding engine and in modern times contains an electric hoist controller. This raises and lowers the cage within the shaft. Hard Rock Hard Rock mining refers to various techniques used to mine ore bodies by creating underground rooms that are supported by surrounding pillars of standing rock. Borehole Mining BHM (Borehole Mining) is a remote operated method of mining mineral resources through boreholes by means of high pressure water jets. This process can be carried out from the surface, open pit floor, underground mine. Where and how does mining it occur? Mines are usually found in non populated areas generally for safety reasons so that they will not be putting people who are native to the area in any kind of danger. These things might be caused because Canada might need resources for trades, businesses, etc. Positive and Negative Effects of Mining Canada’s mining production is a very good one but the metals or mineral just don’t come that easily there must be some disadvantages to this industry.
Pros
.Mining help provide resources that we all use in our daily lives.
Mining also gives jobs. Miners get a good pay for the work they do.
. Mining also continues to help Canada be the world’s leader in production and it ranks in the top five countries for the production of primary aluminum, nickel, platinum group metals, salt, titanium concentrates, uranium, etc.
Cons
Mining can be dangerous for the workers.
Mining has the potential for environmental hazards. Mining might force many animals native to the area to move. Mining might cause the animals that have lost their homes to end up in populated areas. What does the future look like? Canada has some of the best geological real estate in the world. The opportunities for future exploration are numerous, but the mining industry is not immune to the financial crisis as virtually every mining company is proactively reviewing its discretionary expenditures on exploration, given it is a lengthy and expensive process. To ensure its voice is being heard, over 40 of Canada’s senior mining industry executives recently convened in Ottawa and met with federal officials to discuss how the government can ensure the mining industry remains robust and healthy. How does it affect Canada’s economy? This might affect some economies more than others because if the wild life where forced to move out of their habitats they may go to populated areas in search of food and water because they have no were to go so they walk around in search of resources this might put people in danger if animals roamed freely in our neighborhoods. It will also put the workers in danger and might cause environmental hazards due to the evolutionary state we are in today. But things are changing if we find more ways to prevent pollution we could stop the future problems of tomorrow. For taking the time to listening to our presentation References tp://www.nrcan.gc.ca
http://answers.yahoo.com
www.infomine.com
http://ithinkmining.com
http://www.acareerinmining.ca
http://www.detroitsalt.com
http://leadershipvision.ca
http://www.thesudburystar.com
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