Ukufakwa okugxilile kwamasistimu okudlulisela nokusabalalisa, amahubhu namapayipi nezinye izikhathi.
Ukuze isimo akufanele sithwale amandla angaphandle mechanical.
Ukungcwatshwa okuqondile ezimweni zenhlabathi ekhishwa mahhala ukuze kufakwe ngaphakathi nangaphandle.
Izikhali ze-SWA kanye nejazi eliqinile elimelana namanzi lizenza zilungele ukusetshenziswa ngaphakathi nangaphandle kwezakhiwo noma ukungcwatshwa ngqo emhlabathini.