Medium a kaumahapā kila kalaponaʻO ka 20-40mm i manaʻo ʻia ʻo "ka iwi kuamoʻo paʻa." ʻO kona ikaika kiʻekiʻe a me ka paʻakikī e lilo ia i mea koho no nā mīkini nui, nā moku kaomi, a me ka hana moku. I ka hana moku, hoʻohana ʻia nā papa waena a me ke kaumaha o kēia mānoanoa i nā wahi koʻikoʻi e like me ke keel a me ka deck, hiki ke kū i ke kaomi o ke kai a me ka hopena nalu, e hōʻoia i ka hoʻokele palekana. I ka hana ʻana o ka moku kaomi, kū lākou i nā mahana kiʻekiʻe a me nā koʻikoʻi kiʻekiʻe, e hōʻoiaʻiʻo ana i nā hana ʻoihana palekana a paʻa.

Medium a kaumahapapa kilaʻoi aku ka mānoanoa ma mua o 40mm i manaʻo ʻia he "kaumaha." Ke haʻaheo nei kēia mau papa mānoanoa nui loa i ke kūʻē ʻana i ke kaomi, ka ʻaʻahu, a me ka hopena, a hoʻohana mau ʻia i nā apo turbine no nā hale mana wai, nā kumu no nā hale nui, a me nā mīkini mining. I ke kūkulu ʻana i ke kahua hydropower, hoʻohana ʻia lākou i mea no nā apo turbine, hiki ke kū i ka hopena nui o ka kahe wai. ʻO kā lākou hoʻohana ʻana i nā ʻāpana e like me ka scraper conveyors a me nā crushers i nā mīkini mining e hoʻonui i ke ola o nā mea hana a hōʻemi i nā kumukūʻai mālama.

Mai nā kaʻa a hiki i nā moku, mai nā alahaka a i nā mīkini mining, nā papa waena a me ke kaumaha o nā mānoanoa like ʻole, me ko lākou mau pono kūʻokoʻa, kākoʻo mālie i ka hoʻomohala ʻana i ka ʻoihana hou a ua lilo i mau mea pono e hoʻokele i ka holomua ma nā ʻāpana like ʻole.

Hōʻike ka ʻatikala ma luna nei i ka mānoanoa maʻamau a me ka mānoanoa pā kaumaha a me kā lākou mau noi. Inā makemake ʻoe i nā ʻike hou aʻe, e like me nā kaʻina hana a i ʻole nā kikoʻī hana, e ʻoluʻolu e haʻi mai iaʻu.