'Zipper' Truck Builds Tunnels

This innovative system can make quick and durable tunnels that can be used as pedestrian passageways, wine cellars, shelters and more.

Traditionally, building tunnels is a lengthy and tedious process. Lock-Block Ltd, a construction material production company, has introduced an innovative system to make quick and durable tunnels that can be used as pedestrian passageways, wine cellars, shelters and more. 

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