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because opencast mining doesnt require shafts and tunnels to be built unlike other approaches such as deep mining. it is on the surface so transportation costs from underground to ground level do not exist. insurance costs for miners may be lower as there is no risk of the mine 'caving in'.
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∙ 12y ago
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Compare surface and subsurface mining?
Surface Miningeasier than subsurface miningdoes more damage to environmentcreates more of a messSubsurface Miningit is very dangerousyou retrieve minerals from undergroundyou have very little air underground
How do you minimize effects of mining?
How do you minimize the harmful effects of mining?
What kind of jobs are supported by aquamarine?
Geologists, surveyors, miners, tool makers, iron producers, mining equipment manufacturers, tire companies, fuel providers, truckers, detergent suppliers, jewelers, jewelry store workers, shipping companies, lapidary equipment providers, restaurant service workers, and many others would be supported by the production of aquamarine.
Is it cheaper to buy an ipod touch at walmart or target?
target is cheaper $195.00 with 40 target card
What are two negative impacts of mining?
Mining usually tears up large areas of the countryside. A lot of effort goes into recovery of sites, and this costs in terms of dollars, energy and time. Mining, particularly underground mining, is a dangerous business. Many miners are killed or injured every year in accidents (particularly in China). Additionally, mining is conducted to recover ore or aggregates. Processing ore to recover metal takes energy and creates lots of opportunities for pollution. Pollution from the recovery of metal from ore is a serious issue.
What do you mean by opencast mining?
open cast mining is...
What is the opposite of opencast mining?
closecast.
What is a method of mining that involves excavating from the surface?
OPENCAST
What is opencast mining?
open cast minng involves the digging out of minerals that occur on the surface of the earth
How do you mine coal?
Coal is mined by two methods: surface or 'opencast' mining or underground or 'deep' mining.The choice of mining method largely depends on the geology of the coal deposit. Underground mining currently accounts for a bigger share of world coal production than opencast; although in several important coal producing countries surface mining is more common.
What are two ways to mine coal?
Coal is mined by two methods: surface or 'opencast' mining or underground or 'deep' mining.The choice of mining method largely depends on the geology of the coal deposit. Underground mining currently accounts for a bigger share of world coal production than opencast; although in several important coal producing countries surface mining is more common.
What has the author WDavid Evans written?
W.David Evans has written: 'The Geology and Opencast Mining of the Jurassic Ironstones of Great Britain'
What is the difference between opencast mining and shaft mining?
in open cast miniing the earth surface is simly dug out to take minerals which are shallow.in shaft mining we should put bores to take minerals which are deep under the earth
Is pollution an example of chemical weathering?
Pollution is usually caused by human activities - industrial waste, mining and opencast, household waste, and so on.
How do Filipino mining companies differ from Thai mining companies?
Thai mining companies have Thais running/working it and Filipino minining companies have, you guessed it, Filipino's in it.
Why is open mining cheaper than deep mining?
it is cheaper because for deep mining ,the more deeper the minerals lies, the more difficult it is to discover and the more expensive to mine
Top 10 mining company in the Philippines?
There are more than 10 mining companies located in the Philippines. A few of the mining companies are Bulawan, Chamber of Mines, and Bandoro Mining Inc.
