Cost to save trapped micro-TBM in Toronto hits £14.6M

13 Jul, 2023 By

Digital Edition: Cost to save trapped micro-TBM in Toronto hits £14.6M

The cost to free a micro tunnel boring machine (TBM) that became trapped last year while constructing a storm sewer in Toronto, Canada, has risen to C$25M (£14.6M) due to ground stabilisation challenges.
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