Profile: Chiltern Thrust Bore Ltd. specializes in the fields of drilling, and trenchless technology. We offer directional drilling, guided auger boring, rock drilling, auger boring & steel pipe ramming, pneumatic, and hydraulic bursting. Our directional drilling is ideal for the installation of small to medium diameter pipes and ducts on a straight or curved alignment. The drilling is used extensively by the gas, water, telecoms, and electricity industries. Directional drilling is an effective means of installing pipes and ducts from 25 to 900 mm diameter beneath roads, rivers, canals, airport runways, railways, and environmentally sensitive areas. Our microtunnelling is a minimum disruption method of constructing gravity or pressure pipes to precise levels of gradients in most ground conditions.