Zikafika pazitsulo zolimba, zodalirika zobowola, TDS imapanga chitoliro chapamwamba cha HDD (Horizontal Directional Drilling) ndi zida.Zopangira zathu zobowola zopingasa zapamwamba kwambiri zimagonjetsa mapulojekiti omwe amafunikira kwambiri.Kuyambira pobowola pansi pa misewu mpaka pobowola m'malo odzaza kwambiri komanso malo omwe ali ndi vuto la chilengedwe, timagwiritsa ntchito zida zoboola zazikulu zazing'ono mpaka zapakati.Makamaka timapanga ndikupereka ndodo zobowola ndi mapaipi a HDD otsatirawa.