Excavating a 49m deep basement below live railway, and getting faster at it!

Excavating a 49m deep basement below live railway, and getting faster at it!
https://www.youtube.com/watch?feature=youtu.be&v=N83wyYJBauU&app=desktop

Submitted July 11, 2017 at 08:04AM by cromlyngames
via reddit http://ift.tt/2uN5Zgq

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Excavating a 49m deep basement below live railway, and getting faster at it!

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