Cutterhead for one of the 7 line TBM's before it was lowered into the assembly chamber. Diameter = 22 ft. http://twitpic.com/1e375m #DYKT
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Cutterhead for one of the 7 line TBM's before it was lowered into the assembly chamber. Diameter = 22 ft. http://twitpic.com/1e375m #DYKT