Panama Metro Line 3 diaphragm wall construction by German company Bauer - close view
Panama Metro Line 3 diaphragm wall construction by German company Bauer - close view from press information: https://geotechnical-solutions.bauer.de/en/diaphragm-wall-work-metro-expansion-panamaPanama Metro Line 3 diaphragm wall construction by German company Bauer - overall view
Panama Metro Line 3 diaphragm wall construction by German company Bauer - overall view from press information: https://geotechnical-solutions.bauer.de/en/diaphragm-wall-work-metro-expansion-panamaAjuntament de Barcelona Glories tunnel air quality improment table 1
Ajuntament de Barcelona Glories tunnel air quality improment table 1 Ajuntament de Barcelona Servei de Premsa https://ajuntament.barcelona.cat/premsa/2022/08/19/lobertura-del-tun...quest-ambit-de-la-ciutat/ Catalunya, SpainAjuntament de Barcelona Glories tunnel air quality improment table 2
Ajuntament de Barcelona Glories tunnel air quality improment table 2 Ajuntament de Barcelona Servei de Premsa https://ajuntament.barcelona.cat/premsa/2022/08/19/lobertura-del-tun...quest-ambit-de-la-ciutat/ Catalunya, SpainHS2 Cutterhead of TBM Anne from the Victoria Road Crossover Box
HS2 Cutterhead of TBM Anne from the Victoria Road Crossover Box_cropped from High Speed 2 project media: https://mediacentre.hs2.org.uk/news/the-northolt-four-new-tunnelling-machine-joins-three-others-digging-high-speed-line-under-london
cover tunnel photo by: Matt Brown from London, England / CC BY
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