opencast mining

[skimo]

what is opencast mining

[mr_pointment]

http://en.wikipedia.org/wiki/Main_Page

have a look in here

[spacechimp]

Silly mr_pointment, you only linked to the front page. http://en.wikipedia.org/wiki/Open_cast_mining is what you were trying to do ;). I understand that it's difficult for computer illiterate people.

[mr_pointment]

reason i gave the front page was so skimo could practice looking things up for him/herself.some peeps are just bone idle and wait for a monkey to come along and do all the searching for them ..arf

[spacechimp]

I know, I was deliberately annoying you.

[mr_pointment]

now i wont get any stars lol

[Toureman]

If you want to teach people to look up for themselves is that the only reason you log on here,

Just type in the google search bar and you will get better answers than this.

Opencast mining is where the top soil and rock is dug out to expose whatever it is that needs mining. this is used where the material that needs to be mined is close to the surface.

[brachiopod]

The "top soil and rock" above "whatever it is that needs mining" is called the overburden.

Rather than exploiting a seam or concentration of the target mineral by means of an adit or deep mine, it is exposed by removing the entire overlying material.

There are many economical, geological and logistical reasons and conditions that dictate whether deep-mining or open-cast mining (or even any mining at all) takes place, but it would take about ten max-length answers to even scrtch the surface (no pun intended) of the subject.

[gammaray]

Open cast mining is a blight on the landscape.

[mr_pointment]

i pointed skimo in the right direction Toureman,i dont think anyone can rely on AB for the rest of their lives to get their questions answered for them.sometimes its a good idea to try and use your own mind to resolve a problem.a lot of questions are generally better explained and answered through an encyclopedia.some people on this site are very good with their answers,sorry i'm not one of them.but i''ll do my best to answer if i think appropriate.

Thankyou.