...e with you my hypothesis on why London Underground and similar Metros worldwide suffer overheating. I'd be...9X9ajTCg2XFTJbDbCr_-/view?usp=drivesdk.
This paper has been published worldwide in several Railway Journal...
B27 tunnel no longer has top priority in #Ludwigsburg.
It would cost 150m euro. But the tunnel project remains in the wish list for now.
https://www.stimme.de/suedwesten/nachrichten/pl/B27-Tunnel-hat-in-Ludwigsburg-keine-Top-Prioritaet-mehr;art19070,4290136
#Stuttgart
...nland and McMurdo Base in Antarctica."
https://nationalinterest.org/blog/buzz/cold-war-secrets-how-us-navy-planned-spy-russia-underwater-103427
#ColdWar
Istanbul Canal: Erdogan's dream, Istanbul's nightmare
And great many tunnelling opportunities!
https://www.dw.com/en/istanbul-canal-erdogans-dream-istanbuls-nightmare/a-51849822
Dubai Municipality’s (DM) deep tunnel project to drain rainwater and groundwater is 75% complete, according to the director general, Dawoud Al Hajri.
https://www.constructionweekonline.com/projects-and-tenders/262036-dubai-municipalitys-6806m-deep-tunnel-project-75-complete
Brussels: a subsidence in the Quatre Bras tunnel is causing traffic problems.
The subsidence took place near a manhole, in the middle of the roadway, just before the tunnel, says Fl...
Made in the Midwest: #Akkerman's Tunneling Equipment
https://www.youtube.com/watch?v=5N4xiA9eSCg
Medway Tunnel to get almost £5 million of government funding for repairs
https://www.kentonline.co.uk/medway/news/government-funds-for-tunnel-revamp-works-222839/
#Kent