Trenchless communication laying by the machine UGNB-4 of own production in Kalmykia, September, 2009
3 bore holes were drilled by the HDD method by the order of OOO Telekommunikatcionnye i radioreleinye sistemy in Kalmykia.
The type of the soil was loamy sand (consisting of 80% of sand).
Two bore holes were drilled under an irrigation channel, the length of each hole was 150 meters, and the maximum depth was 12 meters. Two plastic pipes 63mm in diameter were pulled into each bore holes. It took 12 hours to complete one bore hole and pull a pipe there.
The third bore hole was drilled under the federal highway being built. The hole length was 100 meters, the maximum depth was 12 meters. It took 9 hours to pull two plastic pipes 63mm in diameter.