Ama-rubbers wemikhono ephezulu yizinto zokubamba ezishaqisayo ezisetshenziswa ochungechungeni lweJumbo lwemishini yezitini. Asetshenziselwa ukuvikela umkhono ophezulu futhi anciphise ukuhunyushwa kokudlidliza kusuka emigodini yomhlahlandlela kuye ohlakeni lomshini.
 
 Ngenkathi le nto uqobo lwayo ingazwani namandla acasulayo ikakhulukazi, injoloba ivame ukucindezelwa ngokuqinile ukugcina umkhono ongaphezulu uzinzile ukuthola amantongomane okusimisa shaft. Ukuphindaphindeka komjikelezo wokumisa isisindo seyunithi yesitampu kusho ukusikwa nsuku zonke nokukhuliswa okuguqula ngokwemvelo injoloba yemikhono ephezulu futhi ekugcineni kudinga ukushintshwa.
 
 Kusetshenziswa amane (4) ngomshini wokwenza izitini ngamunye - Gcina amanye ala ma-rubbers esikhundleni sezinto ezingasetshenziswa.
 
 Lena akuyona injoloba ekhuphukayo esetshenziswa etafuleni lokudlidliza.