Ukusetshenziswa kanye nezici ze-dth drilling rigs.I. Ukusetshenziswa kwe-dth drilling rig.I-dth drilling rig ingasetshenziselwa ukubhola kanye nokumba izimbobo zekhebula le-anchor yedwala, imigodi ye-anchor rod, izimbobo eziqhumayo kanye nemigodi ye-grouting ekwakhiweni kwedolobha, ujantshi, umgwaqo omkhulu, umfula, ugesi ophehlwa ngamanzi kanye namanye amaphrojekthi.II....
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