Isisekelo sokudonswa kwemigwaqo senzelwe ukufundisa abanikazi bokubamba indawo okokuqala, opharetha, izinhlangano zikahulumeni, nabasebenza embonini abasha ngemigomo eyisisekelo yokudonswa kwe-hydraulic dredging.
Ukukhetha iDredge Efanele
Umsiki we-Dredge
Isikhumulo Sokwehla
