Khetha inqwaba yama-idler angaphambili afanele ibanga elisuka kumathani angu-0.2-120 ezimoto ezilandelwa ngomkhondo, njengama-excavators, ama-bulldoza kanye nemishini ekhethekile.
Inqubo ekhethekile yokwelashwa kokushisa iholela ekuphileni okude, izinga elikhulu kunawo wonke ngaphansi komgwaqo osindayo, kuvimbela ukuhlukana.
Sebenzisa uphawu oluphansi noluphakeme oluphindwe kabili kukwenza kube ukugcotshwa kwempilo, ifanele isicelo sokushisa esijwayelekile nesikhethekile.
Khetha uhla olubanzi lwesilawuli sasentwasahlobo, ukuguquguquka okuphezulu kanye nesilawuli sohlobo lwe-hydrocarbon okuyizicelo zesimo sokusebenza semayini.
