Uburambe bwimyaka irenga 16 yo gutanga amababi yamababi, ibicuruzwa byarangiye byageragejwe na Machine Testing Machine, Arc Height Sorting Machine na Machine Yipimisha Umunaniro;Ibikoresho bibisi biva mu ruganda 3 rwambere rwibyuma, ibicuruzwa byose bikozwe muburyo bwiza bwo hejuru, kugirango harebwe ubuziranenge kuva isoko kugeza imperuka.