Impact Moling (or Trenchless Technology) is a way of installing new pipes, cables and ducts without the need for continuous trenches to be dug.
Instead pits are excavated at intervals for the mole to be placed. The mole is then entered into the earth on the horizontal face at the bottom of the pit. Destination pits of similar proportions are also dug, and this is where the mole emerges.
The mole itself is a steel cylinder, it works as a pneumatic cylinder with pulsed compressed air causing the head of the mole to repeatedly hammer against the soil in front of the mole. The mole displaces the soil creating a bore for the new services to then be pulled through. This reduces the installation time, disturbance and cost.