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Discussion - Industry > Iron ore > Mining > Country
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further discussion on Industry > Iron ore > Mining > Country
sam 21st July 2009 |
4 research |
Mark Arexus (Bolivia) 1st April 2009 |
Which units are the graphs in. Isn't it not specific enough? |
Alvaro R. Perez (Santa Cruz, Bolivia) 29th August 2007 |
Question: In mining for iron ore, what is usual, open mining or tunneling? |
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