I nā makahiki i hala iho nei, me ka piʻi ʻana o ka hapa o ka hana ʻeli lua hāmama, a me ka hoʻohana ʻana i ka ʻōpeʻa uila nui (excavator) a me nā kaʻa ʻeli nui, ua hiki aku ka nui o ka ʻaihao o ka lua hāmama i ka hale hana wili i 1.5 ~ 2.0 mika. Ke emi nei ke ʻano o ka ʻaihao i kēlā me kēia lā. I mea e mālama ai i ka hiki ke hana mua o ka hale hana hoʻonaninani ʻaihao, pono e hoʻonui nui ʻia ka nui o ka ʻaihao i ʻeli ʻia a me ka nui o ka ʻaihao i ʻeli ʻia. No laila, ke ulu nei ka mea wili ma kahi ʻaoʻao nui.

Ma ke ʻano he lako nui no ka hana ʻeli ʻana, hoʻohana nui ʻia nā lako crusher no ka wāwahi ʻana i nā mea pōhaku o nā nui like ʻole. ʻO nā lako crusher e komo pū me ka jaw crusher, ka impact crusher, ka impact crusher, ka ring hammer crusher a me ka cone crusher.

Nā Hiʻohiʻona
1. He ʻano hou kēia mīkini o nā lako pōhaku i wili ʻia waena a maikaʻi. Hoʻohana nui ʻia hoʻi ia ma ka honua e pani i ka mea wili cone, ka wili wili a me ka wili pōpō.
2. He mea hou ke ʻano, kū hoʻokahi a paʻa hoʻi.
3. Hoʻohana haʻahaʻa i ka ikehu, hoʻopuka kiʻekiʻe a me ka lakio wāwahi nui.
4, liʻiliʻi ka nui o ka hāmeʻa, maʻalahi e hana, maʻalahi e hoʻouka a mālama.
5, me ka hana hoʻopili, he cubic ka huahana, a nui ka nui o ka nui.
6. I ka wā o ke kaʻina hana, hiki i ka mea pōhaku ke hana i kahi papa lalo pale, a ʻaʻohe ʻaʻahu o ke kino a paʻa.
7. Hana ʻia kahi ʻāpana liʻiliʻi o nā ʻāpana hiki ke komo me nā mea paʻakikī kūikawā a me nā mea kūpaʻa i ke komo ʻana, he liʻiliʻi ka nui, he māmā ke kaumaha a maʻalahi hoʻi e hoʻololi.
8, he liʻiliʻi ka pōʻino i ke kaiapuni, ʻoiai ke ʻano kūikawā o ka mīkini, e hōʻemi ana i ka walaʻau.

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