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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
What can a mining company do to help the environment when an open - cast mine is no longer economic?
Rehabilitation is a legal requirement for mining companies in order to sustain the environment. Rehabilitation procedures include:
- drill holes are capped to stop local fauna falling down the holes
- backfilling trenches to support rehabilitation
- lining tailing ponds with earth to soak up spillage or lining it to prevent seepage
- ripping: soil is ripped to allow tree roots to penetrate through the soil and so that water can percolate through
- backfilling: holes/trenches are filled and contoured to give a natural slope
- top soil return: original soil that was removed upon extraction is replaced to ensure that seedlings can regenerate without introduced diseases or germs stunting growth
- planting seeds
- weeding
What is an environmental problem that is caused by open cast mining of copper ore?
air pollution, dust pollution, it can effected animals and plants as its polluting the water that they drink. Its also using up land space and transport going to the miming is letting on CO2 into the atmosphere which is bad as it gets trapped.
Cassiterite is the primary ore of Tin, the mineral is found in hydrothermal veins and pegmatites associated with granite intrusions. Because of its durability it is also frequently found concentrated in alluvial placer deposits, often in large enough quantities to be commercially exploitable all over the world.
What are the environmental impact of basalt mining?
It destroyed hillsides and created polluted runoff.
What is the history of the Extreme Gold Mining and Milling Company of South Dakota?
The Extreme Gold Mining and Milling Company of South Dakota owned the Minnie May Group Mine near Custer, South Dakota. The mine was located near Custer, South Dakota in the Black Hills National Forest in Custer County.
The Mining Reporter dated May 24, 1906, states that the company was trying to liquidate it indebtedness by reselling shares in order to resume operation of the mine.
Do mining engineers have to apply to a four year college?
The minimum educational requirement for an engineer is a bachelor's degree for entry into the field. However, many higher positions may require a master's or doctorate.
Which river was poisoned as a result of cyanide flowing into it from a gold mine in Romania?
The river is Tisa.
What is patterns in data mining?
A pattern, from the French patron, is a type of theme of recurring events or objects, sometimes referred to as elements of a set of objects.
The elements of a pattern repeat in a predictable manner. Patterns can be based on a template or model which generates pattern elements, especially if the elements have enough in common for the underlying pattern to be inferred, in which case the things are said to exhibit the unique pattern.
http://en.wikipedia.org/wiki/Pattern
Why do you think that mining on land is less costly than mining in the deep ocean is?
Mining on land is less costly than mining in the deep ocean because it takes more equipment to go down to the bottom of the ocean, and all of that equipment costs more money than what they use on land.
It's a scam. Do not respond.
What are two minerals that Mexico is a world leader in producing?
Mexico is ranked in the top 5 producers of silver (13% of world production), bismuth (20% of the world's total), celestite (7% of world output) and fluorspar (18% of world output); sixth in molybdenum; among the top 10 in barite, bentonite, arsenic, diatomite, graphite, cadmium, gypsum, mine lead, manganese ore, salt, sulfur, and mine zinc; and in the top 15 in mine copper, cement, gold, and crude steel (second largest producer in Latin America).
Coal is mined in Newcastle, New South Wales. The first coal was discovered back in 1791 by a group of convict escapees. For obvious reasons, they did not notify the authorities. British soldier, Lieutenant John Shortland, found a coal seam while looking for the escapees in 1797, and coal has been mined there ever since. Copper was also mined at Newcastle in the middle of the nineteenth century.
Why was mining one of the most dangerous jobs in the west?
Working deep underground, in unstable rock, and handling explosives, with nothing in the way of safety gear or modern technology like rock bolts and emergency breathing systems, was very dangerous indeed.
Where is tin found in Australia?
Around 85% of Australia's tin mining is done at the Renison Bell deposit in Tasmania. The next largest tin deposit is at Greenbushes in Western Australia. There are also mines in the Mt Garnet area, near Cairns in Queensland.
What is the role of an engineer in production management?
what are the role of production management-an expository study
In the mining industry most companies cannot afford the cost of maintaining the drilling equipment nor infrastructure required to do inhouse exploration. Self-operated exploration drilling requires the company to have and H/R staff which can higher high caliber people and then attach them to the corporate employment package for the long term. Most self-operated exploration drilling machines cost 2 times as much as contract drilling companies that can distribute the costs and employment agreements over multiple footage projects and locations. Contract Drilling companies stay abreast of new developments in the industry and maintain records to track costs thus arriving at the most economical footage results available for the formations being drilled. (no hidden cost) Self-operate exploration drilling have costs that are ignored and/or written off in other areas of the corporate structure. ie Repairs, fuel, moves, administration. Pro of Self-operated exploration drilling are that the company attains the information on the ore bodies in a more timely manner to make mining development decisions on and operating mine. Self-operated exploration drilling and contract drilling is similar to large mining company keeping staff to do raw exploration- they don't. The large mining companies invest in the junior exploration companies to find new ore bodies which allows them to have experience people looking for ore bodies and managing them selves vs. maintaining a large costly exploration staff. The juniors use contractors because they cannot afford the large capitalization for the drilling equipment and tooling to do small exploration projects to see if they have and ore body. If the junior finds and ore body the large mining company will fund the drilling project for a percentage of the property or will buy out the juniors stock to own the property. The economics of the property will dictated the pros and cons of in-house drilling or contract drilling. It may come down to the risk involved in the ore body involved.
Why was placer mining the most widely used method or mining for gold?
It was an easy method to find gold. All a man needed was a gold pan, and find a spot on the river to pan. Some got a bit more fancy with a sluice box or rocker to seek gold.
Ecuador has mines of gold, silver, copper, coal, salt, lead, iron, and zinc.
What are the advantages and disadvantages of gold?
The advantages are that it is number one, a hedge against a falling currency, like the U.S. dollar. It has a history of over 5,000 years as money. It is no one's liability. It is durable and that is why it has lasted centuries as money and if the current fiat money system collapsed, would be used as money again.
Disadvantages are that it doesn't pay interest. If currencies are doing well (people actually think they are useful as a medium of exchange), then the price of gold could be negatively affected.
Regarding the interest it pays, Zimbabwe money may pay you a million percent interest, but the inflation rate is in the billions, so it's all relative to perception. A 100 Trillion dollar Zimbabwe note today is worth 1 U.S. dollar. (5/22/09)
Why is there no mining in northern Quebec?
Sure there is. Check out Wikipedia entry for the town of Schefferville. It is an iron ore mining town and it sure it North. That said, there is probably not as much mining activity in Quebec as in the rest of northern Canada but that will probably change with time as commodity prices surge and demand for more exotic minerals grows.
