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excavators

Excavators in a tunnel

Learn about tunneling at:

www.aboutcivil.org

2,274 views
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Uploaded on March 15, 2009
Taken on March 15, 2009

excavators

Excavators in a tunnel

Learn about tunneling at:

www.aboutcivil.org

2,274 views
0 faves
0 comments
Uploaded on March 15, 2009
Taken on March 15, 2009
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