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Mining
Mining for coal is something that is widely known, but did you know that diamonds, uranium, copper, and other non-renewable natural resources are also mined? There are two types of mining; surface and subsurface. Questions about the methods and types of mining, what ores are mined, and related questions should be asked in this category.
4,677 Questions
Top nickel mining company in the world?
Norilsk,
Vale,
BHP Billiton,
Xstrata,
Eramet S.A.,
Sumitomo,
Mitsui,
Talvivaara,
Liberty Mines
What the feature of cone crusher?
There are many kinds of cone crushers, take DSMAC PYS series cone crusher for instance.
Features:
- large broken ratio, under the same heavy machine, it can provide larger production capacity.
- modular design, by changing the cavity type to realize the change between coarse, middle and fine crushing.
- spring insurance
- thin oil lubrication system
- hydraulic lock, hydraulic pressure adjustment, hydraulic cavity clean
- automatic control
What are the features of a Stone Crusher?
Stone crusher is a very general concept that encompasses a very wide range of crushers: jaw crusher, cone crusher, impact crusher. Different crushers have different features.
The main features of a jaw crusher :
1.High reduction ratio.
2.Simple structure
3.Easy maintenance.
Who can tell you the difference between vibrating screen and vibrating feeder?
The vibrating screen is a kind of sieving equipment of international advanced level, developed by our company on the basis of carrying on the advantages of traditional screens and This screen machine bears the features of different specifications, reliability, strong exciter, high efficiency, little noise, durability, convenient maintenance and safety. The Vibrating screen is widely used for classification in mining, construction material, transportation, energy, etcbsorbing the outstanding technology from abroad.
The Vibrating screen is widely used for grading and screening materials in the following fields: minerals, quarry, building materials, water conservancy and hydropower, transportation, chemical industry, smelting and so on.
Vibrating Feeder is a kind of linear direction feeding equipment. The Vibrating Feeder of Liming features smooth vibrating, reliable operation, long service life and being suitable for feeding. The feeders are widely used in mining, building-material, silicate and chemical industry in the crushing and screening plants. In the Sand-Stone production line,The feeder machine can send materials to crusher evenly and continuously and at the same time, it can screen materials roughly. The feeder machine can be used in these areas such as metallurgical industry, coal mining industry, mining-selecting, building, chemical and grinding industry, etc.
If you need more detail information ,
Since asking the questions I have had more luck with my research and found a terrific paper directly on point. I knew that as of 1980 three percent of total US electric production (25% of total nuclear electric generation) was used simply to run the country's three nuclear fuel processing labs. So adding in the cost of mining, construction, operation and waste storage had to add significantly to the total power cost. However, the statistics to which I had access were 28 years old. I decided it was time to find something more recent. It is remarkable how little information there is on this point on the internet. You can find a lot of information regarding the carbon footprint of nuclear power. The industry (and certain politicians) want us to believe that nuclear power plants have a much smaller carbon footprint than fossil fuel electric plants. The truth is that nuclear power plants do generate fewer carbon emissions than coal, gas or oil emissions; however, if you take into account the carbon emissions of the entire nuclear cycle (i.e. mining, refining, processing, fabricating & storage of the fuel, and construction, decommissioning and storage of the plant, the carbon footprint is about the same for both the nuclear and the fossil fuel industry).
In any event, Nuclear power - The Energy Balance, a report by Jan Willem Storm van Leeuwen, Senior Scientist, Ceedata Consultancy, Chaam, Netherlands, and Philip Smith, and updated as of February 2008, is available at http://www.stormsmith.nl/ This report concludes that after taking into account mining, refining, processing, fabricating, recycling and storing nuclear fuel, constructing, operating, decommissioning and storing nuclear power plants, and the quantity and guality of known and suspected world-wide deposits of uranium ore, that the net electric output of the nuclear cycle is profoundly negative. In particular the report concludes that the industry while marginally positive now, will drop sustantially into the negative between the years 2030 and 2050 as minable uranium deposits decline in quality. (fn. The carbon footprint of the nuclear industry increases in inverse proportion to the quantity and quality of minable uranium deposits. The world's known and suspected supplies of uranium ore are expected to be wholly depleted by 2050 or earlier).
Personally, I think the author has made some assumptions that are more favorable to the nuclear industry than is deserved. For example, he assumes every nuclear power plant will have a useful life of 50 years, though not a single reactor has reached that grand old age and several have been retired prematurely (Chernobyl and Three Mile Island are two well known examples. The Enrico Fermi plant in Detroit, less well known than the other two, melted down on it's first day of operation and was encased in concrete. The story is the subject of the book "We Almost Lost Detroit.", so-titled after a quote by one of the emergency service workers, and Gil Scot Heron's song of the same name.
But little quibbles aside, the report's unmistakable conclusion is that investment in nuclear energy is a losing proposition, that on balance the nuclear industry CONSUMES more electricity than it produces.
To the person who answered "A small proportion," your answer though short and pithy, lacked citation to any sources, provided no background information regarding your own qualifications to make such a statement, or any information concerning the analysis you undertook, or read, to support your answer. I would be happy to see an open debate on this issue, supported by citation to evidence or credible research. This is an important issue of energy policy and there is almost no discussion of it on the internet.
Which country mines more gold than any other country?
Since 2007, China has led the world in gold production, overtaking South Africa, whose mines have produced as much as 50% of all gold ever mined in the world.
What is a mineral deposit large enough and pure enough to be mined for profit?
An ore deposit is a mineral deposit that is large enough and contains a high enough concentration of valuable minerals to make mining profitable. This usually involves minerals like gold, copper, iron, or coal that have economic value when extracted and processed. The grade and size of an ore deposit are key factors in determining its profitability.
Where might the best place in the ocean to mine for gold silver copper and other minerals?
Deep sea mining is a relatively new mineral retrieval process that takes place on the ocean floor. Ocean mining sites are usually around large areas of polymetallic nodules or active and extinct hydrothermal vents at about 1,400 - 3,700 m below the ocean's surface.[1] The vents create sulfide deposits, which contain valuable metals such as silver, gold, copper, manganese, cobalt, and zinc.[2][3] The deposits are mined using either hydraulic pumps or bucket systems that take ore to the surface to be processed. As with all mining operations, deep sea mining raises questions about potential environmental impact on surrounding areas. Environmental advocacy groups such as Greenpeace have argued that seabed mining should not be permitted in most of the world's oceans because of the potential for damage to deepsea ecosystems.
What are some tools used for mining?
tools that are used in 1800s were, mining candlestick, miners hat, coal oil lamps, hammer, shovel, wedge, rockdrill, a pick and other toools. mining is and was a very dangerous job. back then alot of people died because of the dangers of working at mines. back then there was a miners mask to protect your face from dust and other debreis. now theres alot of tools and machines to do mining. some tools are used back then too. hammer and picks are still used. now they have miner masks, which protect your face. theres mining hats with lighting so miners can see. theres alot of tools, and alot of other information to be looked into.
What was the price of Minnesota Mining MMM stock on April 8 1994?
$25.59 was the closing price on April 8, 1994. On April 11th, there was a 2-for-1 stock split. http://moneycentral.msn.com/investor/charts/chartdl.aspx?PT=11&compsyms=&D4=1&DD=1&D5=0&DCS=2&MA0=0&MA1=0&CP=1&C5=4&C5D=1&C6=1994&C7=4&C7D=11&C8=1994&C9=0&CF=0&D7=&D6=&symbol=US%3AMMM&nocookie=1&SZ=0
Which mineral is mined at Coober Pedy?
Coober Pedy in outback South Australia is known for its opals.
Where to get low profile hard hats for coal mining?
You can purchase that type of hat at www.fiberglasshardhat.com i bought one from those guys and loved it so much everyone on my unit wears one.
What is a metallic mineral that can be mined at a profit?
either pegmatites, quarries, surface minerals, or ores.
Mining is important because without it, there wouldn't be many resources that make up, or made up our economy. Coal, for instance, is a mined substance and is still a common source of fuel. Salt is another example of a mined substance.
What are the advantages and disadvantages of mining gold?
The advantage to a company and country is that gold is a storehouse of value. Mining and refining it provides a form of hard currency. Gold is industrially useful as a corrosion resistant coating for electronics (there is some in almost every computer).
The disadvantages include that mining can damage the environment both on and below the surface. It can imperil water resources by contamination with heavy metals. The miners may be exploited by companies to work in old or dangerous mines, and the temptation to theft can lead to harsh treatment.
Most consumers don't know where the gold in their products comes from, or how it is mined. Gold mining is a dirty industry: it can displace communities, contaminate drinking water, hurt workers, and destroy pristine environments.
What are directly attributable costs?
Cost that is directly associated with the product. eg: if you buy any product on line then you have to pay extra price for its transportation cost or sometimes it is already included in the price of the product.
Who made the 22 caliber semi automatic rifle for American Mining and Development?
Need more information. Any and all markings, barrel length, type of sights, type of stock, #of rounds magazine holds, finish. Is it tube fed or magazine fed?
