Ke ulu nui nei ka hana hou ʻana i ke kenekulia 21 no ka pale ʻana i ka ʻōpala a mālama i ke kaiapuni. Hiki ke hoʻohana hou ʻia nā ʻano mea like ʻole i ka ikehu, ka wahie, ka hoʻihoʻi ʻana i nā mea, ka mālama ola kino mechanical a me ka hana sima, e pili ana i ka hoʻoheheʻe ʻana i nā ʻōpala paʻa o ke kūlanakauhale, ka hana ʻana i nā ʻōpala a me nā ʻoihana ʻenehana, ke kūkulu ʻana a me ka luku ʻana i nā ʻōpala, ka hana hou ʻana, ka palaki a me ka wehe ʻeke. , nā metala hoʻopalapala pepa a me ka pahu pahu, nā ʻōpala nui a me nā ʻano ʻōpala ʻē aʻe.