Ukukhetha umshini wokumba ofanele we-DTH, cabangela izici ezilandelayo: Inhloso Yokubhola: Thola inhloso ethile yephrojekthi yokumba, njengokumba imithombo yamanzi, ukuhlola izimayini, uphenyo lwe-geotechnical, noma ukwakhiwa. Izinhlelo zokusebenza ezahlukene zingadinga izinhlobo ezahlukene zamarigi...
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