Ka whakamahia tika ngā mīhini keri mō ngā mahi keri me te whakarei ake i ngā kohuke. Tae atu ki ngā mīhini keri me ngā mīhini whakapai ake. Ko te kaupapa mahi me te hanganga o ngā mīhini rapu he rite tonu, he rite rānei ki ērā e whakamahia ana mō te keri i ngā kohuke rite. I te nuinga o te wā, nō ngā mīhini keri anō hoki ngā mīhini rapu. Hei tāpiri, he maha ngā kerēni, ngā kaikawe, ngā mīhini hau me ngā mīhini whakaheke wai e whakamahia ana i roto i ngā mahi keri.

Te whakarōpūtanga o ngā mīhini keri

1. Ngā taputapu kuru
Ko ngā taputapu kuru he taputapu ā-ringa e whakamahia ana mō te kuru i ngā kohuke.

Ko ngā mahi kuru ka wehea kia rua, kia toru, kia toru rānei, kia toru, kia toru rānei, kia toru, kia toru rānei, kia toru, kia toru rānei, kia toru rānei. Ko ngā taputapu kirikiri e whakamahia whānuitia ana ko te kuru kauae, te kuru pānga, te kuru pānga, te kuru matū, te kuru hama kotahi-wāhanga, te kuru poutū, te kuru wiri, te kuru kōne, te mīhini kuru roera, te kuru roera takirua, te kuru rua-i-te-kotahi, te kuru hanga kotahi-wā, me ētahi atu.

E ono ngā wāhanga e wehea ana i runga i te tikanga kuru me ngā āhuatanga hanganga o te mīhini (mātāpono mahi).
(1) Mīhini kuru kauae (Laohukou). Ko te mahi kuru he pēhi i te pereti kauae nekeneke ki te pereti kauae pumau i ia wā, i ia wā, hei kuru i ngā poraka konganuku e piri ana ki roto.
(2) Mīhini kuru kōne. Kei waenganui i ngā kōne o roto me ngā kōne o waho te poraka kōhatu, he mea mau te kōne o waho, ā, ka huri te kōne o roto kia kore e rite te āhua hei kuru, hei wawahi rānei i te poraka kōhatu e piri ana ki roto.
(3) Mīhini kuru porotaka. Ko te nuinga o te wā ka kuru tonu te porotaka i roto i te āputa i waenganui i ngā porotaka porowhita e rua e hurihuri ana i te taha, engari he pānga huri me te tihore anō hoki tōna, ā, he pānga tapatapahi anō hoki tōna mata porotaka niho.
(4) Mīhini kuru pānga. Ka kuruhia ngā konganuku e te pānga o ngā wāhanga e tere hurihuri ana. Ka taea te wehewehe i ngā mea e pā ana ki tēnei kāwai ki: te mīhini kuru hama; te mīhini kuru whare herehere; te mīhini kuru pānga.
(5) Mīhini huri. Ka kuruhia te konganuku e te pānga me te mahi huri o te mea huri (pōro maitai, tokotoko maitai, kirikiri, poraka konganuku rānei) i roto i te rango hurihuri.
(6) Ētahi atu momo mīhini kuru me te huri.

2. Ngā mīhini keri
Ko ngā mīhini keri ko ngā taputapu miihini e whakamahia ana mō te keri tika i ngā kohuke whai hua me ngā mahi keri, tae atu ki: ngā mīhini keri mō te keri i ngā konganuku whakarewa me ngā konganuku kore-whakarewa; ngā mīhini keri waro mō te keri waro; ngā mīhini keri hinu mō te keri hinu. I hangaia te mīhini kutikuti kōpae hau tuatahi e te miihini Peretānia a Walker, ā, i angitu te hanga i te tau 1868 pea. I ngā tau 1880, he rau ngā puna hinu i te Hononga o Amerika i angitu te keri me ngā keri patu-kaha-mamao. I te tau 1907, i whakamahia he taputapu roera hei keri i ngā puna hinu me te hau māori. Mai i te tau 1937, kua whakamahia mō te keri poka tuwhera.

3. Ngā mīhini keri
Ngā mīhini keri Ko ngā mīhini keri e whakamahia ana i roto i ngā maina o raro whenua me ngā maina tuwhera ko: ngā mīhini keri mō te keri i ngā poka pahū; ngā mīhini keri me ngā mīhini uta me te tango i ngā mea hei keri me te uta i te konganuku; ngā mīhini keri rua mō te keri i ngā papa, ngā rua me te whakataurite.

4. Ngā mīhini keri
E rua ngā momo mīhini keri: ngā mīhini keri toka me ngā mīhini keri. E rua ngā momo mīhini keri: ngā mīhini keri mata me ngā mīhini keri raro-poka.
① Wiri toka: hei wiri i ngā kōhao pupuhi he 20-100 mm te whānui, ā, he iti iho i te 20 mita te hohonu i roto i ngā toka i runga ake i te pakeke-waenga. E ai ki tōna kaha, ka taea te wehewehe ki ngā wiri toka hau, mura ā-roto, waipēhi me te hiko. I roto i ēnei, ko ngā wiri hau te mea e whakamahia whānuitia ana.
② Pūwero mata: E ai ki ngā momo mahi a te kuru i te toka konganuku, ka wehea ki te pūwero taura maitai, te pūwero raro-i-te-poka, te pūwero roera me te pūwero hurihuri. Nā te iti o te whai huatanga, kua āta whakakapia ngā pūwero taura waea ki ētahi atu pūwero.
③Ringa keri poka raro: Hei tāpiri atu ki ngā keri toka, ka taea hoki te whakamahi i ngā keri poka raro iti te whānui, 80 ki te 150 mm.

5. Ngā mīhini keri rua
Mā te pēhanga tuaka me te kaha hurihuri o te mīhini tapahi ki te huri i runga i te mata o te toka, ka taea e ia te kuru tika i te hanganga toka konganuku, i ngā taputapu miihini hanganga puna rānei. Ko ngā maripi e whakamahia ana ko ngā oumu kōpae, ngā oumu poro, ngā oumu pātene me ngā taputapu mira. E ai ki te rerekētanga o te keri rua, ka wehea ki te mīhini keri whakaara, te mīhini keri poutū me te mīhini keri rori papatahi.
① He mea motuhake ngā taputapu keri poka whakaara mō te keri i ngā poka whakaara me ngā awaawa. I te nuinga o te wā, kāore he take ki te tomo ki te poka whakaara. Ka keria te poka tuatahi ki te mata hurihuri, ā, ka whakamahia te mīhini keri poka i hangaia ki te oumu kōpae hei keri ake i te poka.
②Ko te taputapu keri poutū he mea motuhake hei keri i tētahi puna i te wā kotahi, ā, kei roto ko te pūnaha taputapu keri, he taputapu hurihuri, he taputapu keri, he pūnaha hiki taputapu keri me te pūnaha tohanga paru.
③Mīhini keri, he taputapu miihini whānui e whakakotahi ana i te pakaru toka miihini me te tuku para me te keri tonu. E whakamahia ana mō ngā rori waro, ngā kauhanga hangarau i roto i ngā maina ngohengohe me te whakataurite waenga o ngā toka kohuke he pakeke waenga, neke atu rānei. Te keri kauhanga.

6. Ngā mīhini keri waro
Kua whanake haere ngā mahi keri waro mai i te whakamahi-ā-mīhini i ngā tau 1950 ki te whakamahi-mīhini whānui i ngā tau 1980. He whānuitia te whakamahinga o te keri waro mīhini whānui i roto i ngā kaikeri waro takirua (kotahi) tapa-papaku, ngā kaikawe waru ngāwari, ngā tautoko neke-whaiaro waipēhi me ētahi atu taputapu hei hanga i te keri waro kia anga atu ki te kuru me te kawenga. Ka whakatinanahia te mīhini whānui o te waro, te kawe, te tautoko me ētahi atu hononga. He mīhini taka waro te kaikeri pahu takirua. Ka tukuna e te mōtini hiko te mana ki te pahu porowhita hei tuku waro mā te whakaiti wāhanga tapahi, ā, ka whakatinanahia te nekehanga o te mīhini e te mōtini hiko mā te taputapu tuku wāhanga kukume. E rua ngā tikanga kukume matua, arā, ko te kukume mekameka punga me te kukume mekameka kore-punga. Ka tutuki te kukume mekameka punga mā te hono i te porotiti o te wāhanga kukume me te mekameka punga e mau ana ki te kaikawe.

7. Te keri hinu
Ngā mīhini keri hinu o uta. E ai ki te tukanga keri, ka wehea ki ngā mīhini keri, ngā mīhini tango hinu, ngā mīhini mahi-whakahou, me ngā mīhini pakaru me te whakawaikawa hei pupuri i te nui o te whakaputanga o ngā puna hinu. Ngā mīhini keri He huinga taputapu mīhini katoa mō te keri, te keri rānei i ngā puna whakaputa mō te whakawhanake i te hinu, te hau māori rānei. Ngā taputapu keri hinu, tae atu ki ngā derrick, ngā wāhi kukume, ngā mīhini hiko, ngā pūnaha tohanga paru, te pūnaha taputapu, ngā papa hurihuri, ngā whakaurunga pane puna me ngā pūnaha whakahaere hiko. Ka whakamahia te derrick hei tāuta i ngā kerēni, ngā poraka haere, ngā matau, me ētahi atu, hei hiki i ētahi atu mea taumaha ki runga, ki raro hoki i te papa keri, me te whakairi i ngā taputapu keri i roto i te puna mō te keri.

8. Ngā mīhini tukatuka kohuke
Ko te whakapūmau i te painga ko te tukanga whiriwhiri i ngā kohuke whai hua mai i ngā rauemi mata kohuke kua kohia kia rite ki ngā rerekētanga o ngā āhuatanga ā-tinana, ā-tinana me te matū o ngā kohuke rerekē. Ko te whakatinanatanga o tēnei tukanga ka kiia he mīhini whakapūmau. Ka wehea ngā mīhini whakapūmau ki ngā mīhini kuru, huri, tātari, whakarōpū (whakarōpū) me te tango wai kia rite ki te tukanga whakapūmau. Ko ngā mīhini kuru e whakamahia whānuitia ana ko ngā kuru kauae, ngā kuru wiri, ngā kuru kōne, ngā kuru roera me ngā kuru pānga. Ko te mea e whakamahia whānuitia ana i roto i ngā mīhini huri ko te mira oko, tae atu ki ngā mira tokotoko, ngā mira pōro, ngā mira kirikiri me ngā mira-whaiaro kua whakakikoruatia pai rawa atu. Ko ngā mata wiri korekore me ngā mata whakaata e whakamahia whānuitia ana i roto i ngā mīhini tātari. Ko ngā whakarōpū waipēhi me ngā whakarōpū mīhini he mīhini whakarōpū e whakamahia whānuitia ana i roto i ngā mahi whakarōpū mākū. Ko te mīhini whakapūmau wehewehe e whakamahia whānuitia ana ko te mīhini whakapūmau mirumiru iti e hikitia ana e te hau, ā, ko te mīhini whakamakuku rongonui ko te pūnaha tukunga maroke o ngā para mata whakamakuku maha-auau. Ko te pūnaha kuru me te huri rongonui ko te mira-whaiaro kua whakakikoruatia pai rawa atu.

9. Mīhini whakamaroke
Ko te whakamaroke motuhake paru he momo hou o ngā taputapu whakamaroke motuhake i whakawhanakehia i runga i te kaupapa o te whakamaroke pahu, ka taea te whakamahi whānui i roto i:
1. Te whakamaroke i te paru o te umanga waro, te waro mata, te waro ma te whakapūmau, te waro ma te whakaranu me ētahi atu rauemi;
2. Te whakamaroke i te para o te oumu pupuhi, te uku, te bentonite, te kōhatu papatahi, te onepu, te kōhatu kuata me ētahi atu rauemi i roto i te umanga hanga;
3. Te whakamaroke i ngā momo konganuku whakarewa, ngā toenga para, ngā paru me ētahi atu rauemi i roto i te umanga whakangao;
4. Te whakamaroke i ngā rauemi kāore e pāngia e te wera i roto i te umanga matū.