Tony Brewis wrote:
>Regarding the debate on the difference between mining and
>quarrying.
>
>I agree with Roger. Both involve the extraction of material from
>the earth.
>
>The product of mining is a material which is of no use until smelted
>or treated chemically, to extract some valuable constituent such
>as a metal or salt ( copper, iron, sodium nitrate, etc ).
Er, what about coal?
Richard Kelham
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
|