Ukwazisa i-KJ421 Hydraulic Tunnel Boring Rig - esona sisombululo kuzo zonke iimfuno zakho ezikruqulayo zetonela. Lo matshini omkhulu wokugaya ulungiselelwe ngokukodwa ukuhlangabezana neetonela ezinobukhulu obuhlukeneyo, kunye namacandelo anqamlezayo ukusuka kwi-16-68 square metres. Isixhobo sokomba sinomthamo omkhulu wokugrumba, sinokugrumba imingxunya kunye neebholiti kwindawo ezithe nkqo, ezithambekileyo nezithe tye, kwaye sisixhobo esiyimfuneko ekwakhiweni kwetonela.