Thursday, February 21, 2008

Extraction: Minerals come from mines

The image “http://www.cultimedia.ch/ghosttowns/ghostsut/kennecott04.jpg” cannot be displayed, because it contains errors.http://www.mine-engineer.com/mining/LOADTRK.jpg
http://www.emnrd.state.nm.us/MMD/MMDNotes/fullsize/ContintentalPit.jpg


Sometimes mining means digging huge holes in the ground to access the minerals.

How big do you think this mine is?