Kimwe mu bintu by’ingenzi bigize ukuboko kw’urutare rwa Kaiyuan kwashyizwe ku ruganda rwo gucukura rwa Hitachi 1200 ni ubushobozi bwarwo bwo kurinda moteri nyamukuru.
Rock Arm, nk'igikoresho cyahinduwe gifite intego nyinshi, kibereye gucukura nta guturitsa, nk'ibirombe by'amakara bifunguye, ibirombe bya aluminiyumu, ibirombe bya fosfeti, ibirombe bya zahabu by'umucanga, ibirombe bya quartz, nibindi. Kibereye kandi gucukura amabuye aboneka mu bwubatsi bw'ibanze nko kubaka imihanda no gucukura munsi y'ubutaka, nk'ibumba rikomeye, amabuye yangiritse, shale, ibuye, limestone yoroshye, amabuye y'umucanga, nibindi. Gifite ingaruka nziza, gifite imbaraga nyinshi z'ibikoresho, gifite igipimo gito cyo gutsindwa, gifite ingufu nyinshi ugereranije n'inyundo zivunagurika, kandi gifite urusaku ruto. Rock Arm ni yo mahitamo ya mbere ku bikoresho bidafite uburyo bwo guturitsa.



