Ngā Pou Hauhanga Kowiri tira Ritenga

Ko te mahi a ngā puna hau kowiri tira he whakarato i te ārai me te kaha tautoko i roto i te pēhanga hau o roto, kia maeneene ai te horapa, te tūnga rānei o ngā taputapu miihini.
Puna hau kowiri tira 304:
*Ngā Painga: He iti te utu, he pai te ātete ki te waikura, he kaha te ātete ki te waikura, he pai mō ngā taiao noa (pērā i ngā tāonga whare, ngā motuka, me ētahi atu), he pumau ngā āhuatanga miihini.
*Ngā Huakore: Tērā pea ka waikura i ngā taiao makuku, tote nui, waikawa-pūmua kaha rānei, ā, kāore tōna pakari mō te wā roa e rite ana ki te 316.

Puna hau kowiri tira 316:
*Ngā Painga: Kei roto te huānga molybdenum, he tino ātete ki te waikura, he pai mō ngā taiao uaua pēnei i ngā ahumahi moana me te matū, me te ātete tino pai ki te waikura katote pūhaumāota.
*Ngā Huakore: He nui ake te utu, he iti ake te pakeke (tērā pea ka pā ki te ātete ki te kakahu), ā, he iti ake te whai huatanga ki te whakataurite ki te 304, he pai mō te whakamahinga whānui.