Perhaps nothing is more mesmerizing than the Zipper truck system in action.
The engineering behind it is impressive, yet the fact it can create tunnels with no permanent support work might make some people a bit uneasy.
The following shows the extremely efficient Zipper truck system constructing a 3m reclaim tunnel.
Note From Lock Block Ltd:
This video shows the versatility of the Zipper truck system. We are able to create tunnels with openings very quickly with no permanent support work. This arch can be used as a mining reclaim tunnel or storage vault with top access.