Iminyaka engaphezu kwengu-16 yesipiliyoni sokukhiqiza isiphethu samaqabunga, imikhiqizo eqediwe ehlolwe yi-Stiffness Testing Machine, i-Arc Height Sorting Machine kanye ne-Fatigue Testing Machine; Izinto zokusetshenziswa ezivela ezigayweni zensimbi ezintathu eziphezulu, yonke imikhiqizo yenziwe ngebha eyisicaba esezingeni eliphezulu, ukuqinisekisa ikhwalithi kusukela emthonjeni kuze kube sekupheleni.
