Construction of Enbridge’s Great Lakes Tunnel advanced with the recent completion of sediment and rock sampling at the Straits of Mackinac (US), a key engineering component needed for the final design of the tunnel. The sampling program was a major part of Enbridge’s US$40 million investment in the project in 2019.
The specialised deepwater drilling vessel, Highland Eagle, and a team of experts successfully completed the last of the bedrock borings in the deepwater areas at the Straits last week. Rock and sediment samples were collected from a total of 27 locations including onshore, near-shore and deepwater locations.
Geologists will study the rock samples collected. Results of the study will be used to guide the design of the tunnel, as well as the tunnel boring machine, which will be custom-built to suit the characteristics of geology in the Straits.
Completion of this phase of the project on schedule reflects Enbridge’s deep commitment to building the Great Lakes Tunnel and to being part of Michigan’s future. Enbridge believe the tunnel is the best way to protect the community and the Great Lakes while meeting Michigan’s energy needs.
Read the article online at: https://www.worldpipelines.com/project-news/25112019/construction-of-enbridges-great-lakes-tunnel-makes-progress/
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