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May 4, 2021

MudHoney may start digging canal tunnel next month

Photo by SPU [enlarge]
Pieces of the TBM were lowered into the launch shaft with a crane.

Seattle Public Utilities on Thursday posted a video of crews last month lowering the tunnel boring machine called MudHoney into its launch shaft in Ballard. The video shows the front shield being lowered first, followed by the center shield and then the cutterhead. A few days later, crews lowered the tail shield into the launch shaft. The pieces were set on a launch cradle.


 
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