Ko te mahi o te hiko rewharewha hiko ka whakamahia hei peera tapahi, hei peera mana me te taki taki i roto i te punaha pipeline.He pai hoki mo etahi wa e hiahia ana ki te whakahaere i te rere.He waahanga mahi nui i roto i te waahi o te whakahaere aunoatanga ahumahi.