Ngā papa rapa o te kerihe mea hanga kia tino pai te mahi i roto i ngā āhuatanga huarere rerekē, mai i te pāmahana tio ki te wera nui. He rerekē ki ngā papa ara keri rino, ka pakarukaru i ngā āhuarangi makariri, ka pahekeheke rānei ina mākū,papa ara rapa whakapirikia mau tonu te kukume me te ngāwari. Ko ngā matū rapa matatau e whakamahia ana i roto i ngā papa ara keri ka ātete ki te pakaru i roto i ngā taiao i raro i te kore, me te ārai i te wera nui i roto i ngā mahi pāmahana teitei. Nā tēnei ka pai mō te whakamahi i te tau katoa i roto i ngā rohe he nui ngā huringa o te wā. Hei tāpiri, ka whakaratohia e ngā papa keri he kaha pai ki te whakaheke paru, ka ārai i te kohikohinga paru me ngā paru ka whakararu i te nekenekehanga. Mō ngā kaimahi kirimana e mahi ana i ngā papa mahi maha me ngā āhuatanga whenua rerekē, ka tukuna e ēnei papa ara keri he mahi pono ahakoa ngā wero o te rangi.

He tauira takahanga ahurei kei roto i ēnei papa keri e whakarato ana i te pupuri me te kukume pai, e āhei ai tō keri ki te whakawhiti i ngā whenua taratara me te ngāwari me te tika. Mā te pumau me te kukume kua whakarei ake e whakaratohia ana e ngā papa ara ka āwhina i te whakapai ake i te hua me te haumaru o te papa mahi, ka whakaiti i te mōrearea o te paheke me ngā aituā.

HXP600Gngā papa keritāutanga tere, ngāwari hoki, kia iti ai te wā whakatā me te whakapiki ake i te pai o te mahi. Mā te taunga haumaru me te hanganga pakari o ngā papa ara ka whakaratohia he turanga pono mō te keri, ka whakaitihia te paheke o te ara, ā, ka whakaitihia ngā utu tiaki mō te wā roa.