Te mōhiotanga ki te pūtaiao o te karāhe: I te pikinga ake o te mōhiotanga haumaru o te tangata, ka whiriwhiria e te tangata te karāhe, ehara i te karāhe taketake noa iho, engari ko te hiahia kia tukatukahia te karāhe.
Tīmata mai i te karāhe whakapakeke, ko te kaha o te karāhe whakapakeke he karāhe noa, e rima ngā wā pea, engari ehara i te karāhe whakapakeke, he tino haumaru, nā te mea mēnā ka pakaru te karāhe, ka pā ki te oranga o te tangata.
He otinga pai kei reira? Ko te whakaaro kia whakamahia ngā poro karāhe e rua e piri ana ki waenganui i te kiriata hei hanga karāhe whakakikoruatia, kia taea ai te pakaru ahakoa he poro karāhe, me te kore e whakararu i te haumaru.
E mōhiotia whānuitia ana ahakoa he kaha te karāhe whakamātotoru, he ngoikore tōna. Nā te utu nui o te pupuri i te nickel sulfide tēnei, ka taea te pahū ina hurihia te nickel sulfide mai i te āhua pumau. Nō reira, he otinga pai ko te whakakotahitanga o te karāhe whakamātotoru, ka heke te karāhe whakamātotoru mai i te toru wāhanga ia mano ki te kotahi wāhanga ia tekau mano, ka piki ake te tauwehenga haumaru o taua karāhe whakamātotoru, kātahi ka pania ki te whakakikorua.
Hei tauira, ko te karāhe whakakikoruatia pakari ka whakamahia whānuitia i roto i ngā tuanui whakamārama rā, i ngā ārai karāhe, i ngā tuanui, i ngā whare waka, me ētahi atu. Me whakamātauria ngā karāhe pēnei i ngā ara hikoi karāhe ki roto i te mīhini whakaranu i muri i te whakamakuku hei whakaiti i te tūponotanga o te pahūtanga o te karāhe whakamakuku.
Wā tuku: Hakihea-31-2020
