http://en.wikipedia.org/wiki/Dredging
http://commons.wikimedia.org/wiki/File:Cutter_head_(1).JPG
Cutterhead
By adrbr @ 2011-08-04 05:25:17
kjfitz
@ 2011-08-04 08:58:17
I love this industrial stuff on display. If I could find a succinct way of describing it we'd do a safari on just this stuff. Love it!