Loaʻa nā kumu waiwai waiwai no ka hanaʻana i nā pōhaku lepoʻole i hanaʻia e ka mīkini pōhaku lepoʻole. I kēia manawa, hāʻawi ka hoʻonui ʻana i ka ʻōpala hana i kahi lako pono o nā mea maka no nā pōhaku i puhi ʻole ʻia, a ʻo ka ʻenehana a me ka pae kaʻina hana ma ka pae alakaʻi ma Kina. E like me kā mākou e ʻike ai, pili ka hana o ka huahana i nā ʻano o nā mea maka a me nā mīkini i hana ʻia. E like me ka nānā ʻana o ke kikowaena nānā maikaʻi o ka ʻāina no ka pā a me nā mea hale, ʻoi aku ka kiʻekiʻe o ka hana ʻana o ka hana ʻana e ka mīkini ʻaʻa ʻole i puhi ʻia ma mua o ka ʻulaʻula ʻulaʻula kahiko, ʻoi aku ka maikaʻi a me ka hoʻoheheʻe ʻana i ka wai ma mua o ka pōhaku lepo maʻamau, a ʻoi aku ka liʻiliʻi o ka maloʻo maloʻo a me ka thermal conductivity ma mua o nā huahana paʻa maʻamau. I ka pōkole, hōʻike ʻia nā ʻikepili hoʻāʻo ʻoihana maoli e ʻoi aku ka maikaʻi o ka hana compressive structural o unburned brick ma mua o ka pōhaku ʻulaʻula kahiko, a hiki iā ia ke kū i ka hoʻāʻo o ka mōʻaukala a me ka manawa.