Okokuqala, umkhiqizo ubonisa ukuqina okuphezulu: Uma kuqhathaniswa namazinyo avamile ebhakede, la mazinyo aqiniswe kakhulu, okwenza amelane kakhulu nokuphuka lapho eshaywa.
Okwesibili, ikhombisa ukumelana nokuguguleka okuphezulu: Amazinyo ebhakede lensimbi ye-alloy akhiqizwa ngensimbi ye-alloy ephansi yekhabhoni, okuholela ekumelaneni nokuguguleka okuphezulu, okulinganisa ngokuphindwe kane kuya kahlanu kunamazinyo ebhakede lensimbi ye-manganese ejwayelekile.
