"Opting for a tunnel-based mineral transportation system (MTS) adds £150 million (15%) to initial construction costs, but offers the potential to double Phase I polyhalite extraction capacity from 6.5 million tonne/year to 13 million tonne/year, and reduces operating expenses by 25%. Critically, opting for an underground transportation solution offers significant environmental benefits to a project that is, in part, situated within the boundaries of the York Moors National Park.
Crimea a river - nah, keeping it Strait :-)
"Déjà vu! Almost immediately after President Vladimir Putin of Russia remarked on the necessity to build a transport crossing of the Kerch Strait to the Crimea Peninsula, the classic ‘lyrical poets against physicists’ dilemma re-emerged. What is the real need of Crimea? Is it a bridge or a tunnel? And here again the proverb ‘every bird likes its own nest’ comes to mind. While bridge engineers are defending a bridge strait crossing as a beautiful, aesthetically pleasing, effective, picturesque and inexpensive solution (from their viewpoint), the tunnel engineers argue in the opposite direction, promoting the tunnel option as the safest, most reliable and the most durable of engineering structures.
The bridge option, undoubtedly, has a lot of advantages, while at the same time being the most vulnerable of structures to both natural hazards, such as thunderstorms, typhoons, earthquakes, and ice drifts, and to terrorist attacks or local military conflicts. The above factors encourage further comparison between bridge and tunnel solutions proposed for the Kerch Strait crossing."
Anyhow this has gotta be the dogs: though not spotted yet on Tunnel Talk :-) ...
One to watch - erm before the Nepal earthquake, sadly : http://rt.com/news/248333-china-nepal-everest-railway/
The Chinese are reportedly considering building a railway between China and Nepal that could involve building a tunnel under Mount Everest. The plan has set alarm bells ringing in Delhi.
The proposed 540-kilometer high-speed rail link is expected to be completed by 2020 and would be an extension of a railway that already links China with Lhasa, the capital of the Tibet Autonomous Region, according to Chinese state media.
“A proposed extension of the Qinghai-Tibet Railway to the China-Nepal border through Tibet would boost bilateral trade and tourism as there is currently no rail line linking the two countries,” the state-run China Daily reported.
Anoraks at the ready :- )
OK. four - for Flooding at Thun : http://www.vsl-ip.com/index.php?cID=241 - a glacial retreat ... & here: VSL_Switzerland_Flood protection tunnel_(2725).pdf
Any doubts about the construction - ask the elusive (do-able) Alan Gamble :- ) page 5: http://www.siriusminerals.com/site/assets/files/2077/150519_-_sxx_invest...
Mind you he's probably, erm pre-occupied ....