Iinjineli ezi-3 zobuchwephesha ezineminyaka esi-8 yamava eshishini kunye ne-1 injineli eyintloko yobuchwephesha enamava ali-16years. Zonke iimveliso zihlolwe nge-100% ngaphambi kokunikezelwa ukuqinisekisa ukuba zonke iimveliso zifika kubathengi ngomgangatho owanelisayo.Iiyure ezingama-24 impendulo kwisicelo somthengi.
