Site na njiri mara mma ya na imepụta ihe ọhụrụ, ogwe aka nkume Kaiyuan arụnyere na ihe gwupụtara Cat 385 na-ekewapụta onwe ya n'ezie.
Rock Arm, dị ka a multi-nzube gbanwetụrụ ogwe aka, adabara Ngwuputa na-enweghị blasting, dị ka oghe-olulu coal mines, aluminum mines, phosphate mines, ájá gold mines, quartz mines, wdg Ọ dịkwa mma maka nkume ngwuputa okosobode na isi ewu dị ka ụzọ na-ewu okporo ụzọ na okpuru ulo ogwugwu, dị ka ike ụrọ, ike weathered nkume nkume, shale, nkume nkume, nkume dị nro nwere mmetụta dị nro, lime, wdg. ọnụego, ike dị elu ma e jiri ya tụnyere hama na-agbaji, na mkpọtụ dị ala. Rock Arm bụ nhọrọ mbụ maka akụrụngwa na-enweghị ọnọdụ mgbawa.