Ko te whakamahi i te kōhui hei ara hei whakamārama i te hiko. Ko te kōhui he kōhatu mākū, e tātai ana mai i te whenua. I tātai ai ngā tāngata i te whenua, ā, ka whakamātao ai hei whakamārama. Ko te whakamārama nei e whakamārama ai i te wai hei hukapapa. Ko te hukapapa nei e whakamārama ai i tēnei rākau nui, ko te turupī, e whakamārama ai i te hiko. Ahakoa he nui ngā kōrero a ngā tāngata kia kore ai te kōhui hei pānga mō te ao, i tāwhai ai i ngā tau maha hei whakamārama i ō tātou whare me ngā whare ohaoha. I Insun, e mātua ana mātou i te hiranga o te whakamārama i ngā pūngao e tāwhai ana. Mā te kōhui anō te whakamārama kaha i te wā e tāwhai ana.
He tino pūmau te whai i te kōhia pai hei whakamārama i te whakamāhua i ngā hāngā whakamāhua kaha. Ko ngā kōhia koua he pai ake i ngā kōhia āhua, ā, he nui ake ngā hiko i whakamāhua. Me rapu koe i ngā kōhia e whai ana i te tau o te kāboni. Ko tēnei he tohu kia roa ake te whakamāhua, ā, he nui ake te hiko i whakamāhua. He rereke ngā momo kōhia, pērā i ngā kōhia anthracite, bituminous, sub-bituminous, me ngā kōhia lignite. Ko ngā kōhia anthracite te pai rawa hei hiko, nā reira he hīkawea ake, ā, he wāhi māmā ake te whakamāhua. He uaua ake te whai, engari he uaua noa i te whai. Ko ngā kōhia bituminous ngā kōhia e whakamāhua ana e ngā hāngā whakamāhua katoa. He tāwhai pai ngā hiko, ā, he māmā ake te whai. Mō ngā tāngata e rapu ana i ngā whakamāhua pai, ko ngā Te rōrī tāwhai CK-260 tuaka i whakamahinga kē, i roto i te rārangi whakamātautau pūnaha hāngā tāwhai katoa i whakamahinga kē he whirihora pai.