pūhanga konae whakamātau
He tari whakamahi pūtaiao te pūtahi kōpikia he mea hanga noa iho hei whakatupu i te hiranga o te tahuhu i ngā momo tahuhu ā-wheako. Ko tēnei tari hou e āheinga ana i tana huataki tae ki te ara kōpikia, me ngā kōpikia tungsten carbide e tūhono ana i runga i tana mata. E āhei ana te whakaahuatanga o te kōpikia ki te whakapai i te mahi tahuhu, ka whai wā ka nui ake te whanaga o te rākau, ahakoa ko te whakatika tonu i waenga i te mahi. Ko ngā kōpikia, e hanga ana i te rau o te maha, e āhei ana ki te whakatiki i te whakarite, me te whakatiki i te tahuhu, ā, ka āhei anō ki te whakawai i ngā tahuhu whenua katoa. Ko te whiuaro taipū o te kōpikia kōpikia e āwhina ana ki te whakapai i te whakawherowhero i ngā kereka, me te iti i te mate o te whakapiri i waenga i te mahi. Ki te hanga, kei roto i ngā ara whakamahara, e whakapai ana i te hīrahi me te whakatiki i ngā kereka i roto i te wāhi tahuhu. Kei te hanga te whiuaro o te pūtahi ki te whakawehewe i te hīrahi puta i tana mata, ka whakapai i te oranga o te tari, ka whakamana hoki i te mahi pai. Nā reira, kei te nui ake te mana o ēnei pūtahi i ngā mahi tohu whenua, hanga, me ngā mahi geotechnical, kei reira te hiahia ki te tahuhu pai, tirohanga. Ko te whakaaetanga o te whiuaro, te pai o te mahi, me te whakarite, ka whakaae atu te kōpikia kōpikia hei mea nui rawa mo ngā mahi tahuhu.
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