tunnel piperoof grouting
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners.
tunnel piperoof grouting |
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| navigate by keyword : boring building chamber concrete constructing construction digging dirt drill drilling engineer engineering excavation front geology grouting machine machinery metro mine mineral mining piperoof power securing site soil subway support supporting train tunnel tunneling underground worker working |
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| Geneva, Switzerland - May 22, 2014: Two workers preparing the machine for the construction of piperoof grouting for a tunnel |
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Stockphotos.ro (c) 2025. All stock photos are provided by Dreamstime and are copyrighted by their respective owners. |
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