Ka wehewehena kaʻina hana:Ua ninini ʻia ka mea hana i loko o kaʻu hopper (me kahi pūnāwai) mai ke kumu waiwai, a aia kahi mea haʻalulu ma lalo o ka hopper. Ke hana nei ka mea ha'alulu e puunaue like i ka mea hana ma ka hopper ma ke kā'ei conveyor ho'oki'eki'e. Aia kekahi mākena mākia ikaika ma ke kua o ke kāʻei conveyor, e omo ana i ka mea hana mai ka holo ʻana ma ke ala ʻulaʻula a i luna. Ke piʻi ka mākia ikaika i luna, hana hou ia, a hāʻule ka mea hana i ka mokulele hana hou o ke kaʻina hana.