I roto i ngā maina o raro whenua, me tino tika te hanga i ngā ara kohukekeriputa noa i ngā paparanga whenua matatini. Ko teYT29A wiri toka hau ka whakarato i te whakawhiti pūngao kaha me te pumau, kia hohonu ake ai te urunga me te tere ake te ahunga whakamua.

 

He pakari tōna hanganga, ā, ka tū pakari ki ngā toka whakakoi, ka whakapai ake i te tere o te keri me te whakaiti i te wā mahi tiaki. Mō ngā maina he maha ngā huringa pupuhi, ko te tikanga tēneite pai ake o te rere o te konganuku.

 

I hangaia mō ngā mahi keri nui e hiahiatia ana, ko te keri toka hau YT29A e tohu ana i te ahunga whakamua i roto i te hangarau keri whenua. Ka aro tika ki te aukati o te whanaketanga o te ara kōhatu—he wāhanga nui e ngoikore ai ngā taputapu keri tuku iho i raro i te pēhanga pumau i roto i ngā hanganga toka taumaha koretake. Ko te mea e wehewehe ana i te YT29A ko tana pūnaha tuku pūngao kua arotauhia. Ko te hanganga o te takirere me te piston o roto o te keri ka huri pai i te hau kōpeke hei kaha patu rite tonu, ka whakaiti i te ngaronga pūngao ahakoa i ngā hohonutanga roa. Mā tēnei ka whakarite kia tukuna e ia pupuhi te pānga pakaru nui rawa atu, ka taea e ngā kaiwhakahaere keri te pupuri i ngā tere whakamua me te kore e huri pinepine i ngā taputapu, e whakatikatika anō rānei.

 

Ko te pakari te kaupapa matua o te hoahoa o te YT29A. Kei roto i te waeine he rango whakapakari me ngā wāhanga koranu whakapakeke e ātete ana ki te pakaru mai i ngā quartzite whakakoi me ngā hanganga granite. I roto i ngā taiao e tere ai te pakaru o ngā keri noa i ngā para toka me te wiri tonu, ka mau tonu te hanganga o te YT29A i roto i te whakamahinga roa. Mā tēnei pakari ka whakaiti tika i ngā okiokinga tiaki kore i whakaritea—he whakaroa noa i roto i ngā matā pupuhi kua whakaritea kia piri.NākuE ai ki ngā kaiwhakamahere, he iti ake ngā whakaroa mō ngā mahi keri, ā, mā tēnei ka noho tonu ngā kapa whakawhanake i te huarahi tika, ka whakapoto hoki i te wā i waenga i ngā huringa keri me te pupuhi.

 

He mea ine te pānga mahi ki te hanganga ara kōhatu. Mā te whakahohe i ngā poka hohonu ake, tika ake, me te iti ake o ngā pekapeka, ka āwhina te YT29A ki te waihanga i ngā awa rere kōhatu pumau ake, whai hua ake hoki. He mea nui te tika o te keri i ngā hononga i waenga i ngā taumata hei karo i ngā ahi hē, i ngā pakaru koretake rānei. Mā te pumau me te mana whakahaere o te keri ka taea e ngā kaimahi te whai tika i ngā mahere whenua, ka whakaiti i te tūponotanga o te pakaru nui, te pakaru iti rānei ka ārai i te nekehanga rauemi i muri mai. Mō ngā maina e whakawhirinaki ana ki te pupuhi pinepine hei pupuri i ngā whāinga whakaputa, ko te penapena ahakoa he torutoru hāora ia rauna ka kohia hei hua nui ia marama—ka whakapiki ake i te toronga whatunga me te whakaputanga me te kore e piki ake te rahinga o ngā hāora mahi, mīhini rānei.

 

Hei tāpiri atu, he pai te mahi a te YT29A i roto i ngā hanganga hau-kōpeke o te maina, ā, kāore e hiahiatia he whakahoutanga utu nui. E whakanui ana tōna hoahoa i te ngāwari o te kaiwhakahaere, me te whakaiti i te whana me te taumaha ka taea te whakahaere, kia roa ake ai ngā nekehanga me te iti o te ngenge. I te pana o ngā mahi o raro whenua ki roto i ngā toka pakeke me ngā pae tawhiti hohonu ake, ka noho ko ēnei taputapu pono, i hangaia mō tētahi kaupapa motuhake, he mea nui. Ehara te YT29A i te whakahoutanga ā-pūtea noa iho—he otinga motuhake e huri ana i te whanaketanga ara kohatu mai i te arai auau ki tētahi tukanga matapae, ngāwari hoki, e whakapakari ana i te tuara o te whatunga kawe i te wāhi e tino hira ana te keri tere, pumau.