AMAZING! Building A RECLAIM TUNNEL With A Zipper Truck In A Very Short Period

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Constructing a tunnel is one of the most complex challenges in the field of civil engineering. The Lock-Block™ system use the ancient and modern technics,and they are building a reclaim tunnel within hours...

This demonstration is carried by the Lock-Block™ team using their own pre-made concrete units...They are constructing ¼ mile archway in just twenty four hours.

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