Ihe gwup?ta ihe kwes?r? ekwes?:6-30ton
?r? ahaziri ahazi, gboo mkpa ak?wap?tara

Mpaghara ngwa:

? d? mma maka ?kwanye na ?kwatu nnukwu ibu, ?la, coal, ájá, gravel, ala na nkume, wdg na ?l? ?r? d? iche iche.
Njirimara:
Ikike buru ibu, ikike ?kwanye ihe siri ike, ?r? na-agbanwe agbanwe, yana ?r? ?r? nr?nye na mbupu d? mma;

Ejiri ígwè d? elu mee ihe, mgbe usoro ?gw?gw? okpom?k? d? iche iche, ? na-eyi na-eguzogide ?gw? na corrosion na-eguzogide, d? mma ma kw?sie ike, ma nwee ogologo nd? ?r?;

Nhazi ah? d?t? mfe, d? mfe idowe yana enwere ike ime mgbanwe nke ukwuu:

? na-agbaso at?mat? ?w? clamshell, nke nwere ike ?t?ghar? ogo 360, na-eme ka ? d?kwuo mfe ma d? elu.