Rochester, Minnesota : All American Microtunneling Under the Zumbro River in Downtown Rochester
Rochester Public Works department had a need to improve a sanitary sewer and the contractor Lametti & Sons, Inc. have chosen an all-American solution from Akkerman....Advancements in Slurry Microtunneling for Long Distance and Curved Tunnels
https://www.youtube.com/watch?v=mlNOHw_i05w
cover tunnel photo by: Matt Brown from London, England / CC BY
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