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People who like reply on Qatar: TBM reaches 50% of the tunnel in boring 10-km long outfall tunnel
Ali T. Bashar on Qatar: TBM reaches 50% of the tunnel in boring 10-km long outfall tunnel (): https://menafn.com/1100388259/Qatar-Ashghal-completes-50-excavation-works-of-the...
cover tunnel photo by: Matt Brown from London, England / CC BY
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