Ọnọdụ ọrụ:Ọnọdụ ọrụ na-agbagwoju anya, gụnyere ọnọdụ arụ ọrụ jikọtara ọnụ nke gravel, uzuzu na ụrọ.
A na-eji igwe a na-ewu okporo ụzọ, nickel mineral powder bulldozing, na coal bulldozing na Indonesia na onye ọrụ nwere afọ ojuju na arụmọrụ ya pụtara ìhè.
