 According ka ala buru ibu, e nwere abụọ-ala na anọ na-ala crusher, nke na-nọtụtụ ebe na hazie kenkuwa na mgbanwe ihe na simenti, nkà mmụta banyere ígwè, chemical, ụlọ ọrụ, ike na coala na na edoghi. 