Isikhli sesishayamahle sokuqala kweShandong Tonda sihlawulekile ukuthi zibuyeleye ukuhlawulula nokuhlula kakhulu ngokubhebha amandla okusebenza kwiseva lesihulumende lokusetyenziswa izinto ezinomsindo. Isikhli sifanisa amalayini angamaqhathu: ilayini laphandle elingezantsi lokugcina umsebenzi (Shore D 85–95) lokushintsha amacala okanyekeka kunye nesilayithi eside esiqhathanisiyo (Shore A 70–80) lokushintshela isigaba. Le ndawo yamalayini amabili inceda ukukhupha kuhluke kanye nokuhlula, uzogcinwa iminyaka engu-50% kwiminyaka yeseyile emasendaweni apho kukho umsebenzi olunomdabu njengesi-mining kunye nenkcukacha. Amalayini akufanele aqhamuka ngeemilinga embuzweni yokuvavanya ukuba amandla angakho nokuhlula angavavanyiswe ngokusukela. Langa nethu ukubalekela iindlela zakhiwo zokusebenzisa kwezikhli zemalayini emabili ngokwesikhathi sokungena kwezindlu ezimbili.