Tunnel slyping

In tunnel slyping applications, the Royex propellant cartridges obviate the need for explosives so there is far less risk during transportation and use. The absence of noxious gasses allow rapid re-entry and the fact that no fly rock is generated rules out damage to surrounding pipes, cables, ventilation columns so consequently slyping can continue during normal shift operations.

Minimal ground vibration is generated and back-break is produced so there is no damage to the side walls and reduced safety distances are possible for people and machinery.