Panyaya yekupwanya matombo, muchina weCater 395 une ruoko rwedombo reKaiyuan wakaratidza kugona kwawo kushanda nemazvo.
Rock Arm, seruoko rwakagadziriswa mabasa akawanda, rwakakodzera kuchera pasina kuputitsa, senge migodhi yemarasha yakavhurika, migodhi yealuminium, migodhi yephosphate, migodhi yegoridhe yejecha, migodhi yequartz, nezvimwewo. Rwakakodzerawo kuchera matombo anowanikwa mukuvaka kwakadai sekugadzira migwagwa nekuchera pasi pevhu, senge ivhu rakaoma, dombo rakapwanyika, shale, dombo, limestone yakapfava, sandstone, nezvimwewo. Rune mhedzisiro yakanaka, simba remidziyo yakawanda, mwero wekutadza kushanda zvakanaka, simba remagetsi rakawanda kana tichienzanisa nenyundo dzinopwanyika, uye ruzha rwakaderera. Rock Arm ndiyo sarudzo yekutanga yemidziyo isina mamiriro ekuputitsa.
