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by Stratigraphy.net
New from Snet: Lithologs, a new tool to create lithological/sedimentological logs online..

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Niagara Tunnel - May Report

May 2nd 2010 -The TBM is at 6,882 meters (22,578.4 feet). The TBM has been shutdown for scheduled maintenance and to allow for the launch of the arch forms into the tunnel. On May 11th, the widening of the new air vent shaft will begin.Well, the fire didn't slow them a bit! They are having lots of fun zooming through the cap rock at a tremendous speed. No word on how well they are doing with

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