Hoʻohana nui ʻia nā koʻokoʻo magnetic e kānana i nā pine hao i nā mea maka;E kānana i nā ʻano pauda maikaʻi a me ka wai, nā haumia hao i loko o ka semi wai a me nā mea magnetic ʻē aʻe.I kēia manawa, hoʻohana nui ʻia ia i ka ʻoihana kemika, ka meaʻai, ka hoʻomaʻamaʻa ʻōpala, ka ʻeleʻele kalapona a me nā māla ʻē aʻe.