Nā mātau ngā piripihi whakauru hāpora hei whiwhi i te whakauru hāpora i waenganui i ngā ara matatika me ngā ara tōrino. Ka āhei ngā piripihi o mātau ki te whakamahi mo te whakauru hāpora i raro i ngā mahi tirotiro taiao, ngā whakamataki pakihi, rānei ko ngā momo rangahau katoa. He waihanga tētahi ki te whakamahi, nā reira ka noho haere ngā mahi whakaaturanga kia kore ai e torotoro ana ki tō mahi. Noho superior noa atu ngā pai ake o ngā mahi e whiwhi nei i te whakapono o te kāwanatanga ki te pai me ngā whakamua i te hunga mata.