Crossrail Tunnel 2017: Update on Europe's largest infrastructure project ....

It's estimated that there's about 17,000 tonnes of bombs that were dropped on London in WWII, and the rule of thumb is that about 10% failed to explode....

Freeman Simon Cooke's 2013 article, including his engineering input to this project, is at wcomc.org/sept30-1 :  accompanied with astonishing Crossrail statistics, wartime underground maps and pics, at http://www.bbc.co.uk/news/magazine-23518137.

Crossrail 2017 Update....

Since the start of construction in 2013, more than 10,000 objects from prehistory to the present day have been unearthed, giving archaeelogists significant insight into our past - from early geological changes to the habits of Roman London, the DNA of the Great Plague and Black Death, and beyond....

Photos / maps / events at -  http://www.crossrail.co.uk/news/quarterly-crossrail-update/