Friday, November 6, 2009

November Update

The contractor is in the process of testing the tunnel boring machine (TBM) and will begin mining the tunnel soon. Once the mining process begins, rings of concrete segments will be installed by the TBM inside the tunnel to provide ground support.

The holidays will be here soon! We do not plan to work on the following dates: November 26 and 27. December 25 and January 1st.



Here is a recent photo of the South Shaft site showing the precast concrete segments that will be installed inside the tunnel.

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