
Iimvangi zeribhoni ezinebelo eliphasi, ezinesitsha esimise okuka-U esinganazo iindawo ezingafikeleleki, ezingu 400 kuya ku 6000 amalitha, zokuvanga ngokulinganako ngaphandle kokulimaza impahla.
Iimvangi zingakhiwa ngezinto ezihlukahlukeneko ngokwe-oda. Ngenxa yokuthi ukuminyana kwenqwaba kuyahlukahluka ngokweemboni, iinqophiso ezingenhla zingezamamodeli avamile; amametheriyali aminyene khulu atlhoga amandla emoderini nawokufuthumeza aphakeme ngokulinganako.