Nā ʻāpana Mill Ball

Ka wehewehe nui

ʻO ka wili pōleʻa he mea wili wili i loko o ka cylinder a me ka mīkini wili ʻana he seramika a i ʻole pōpō kila i loko. Holo ka wili kinipōpō a lawe i nā pōpō i luna a hāʻule i lalo. ʻO ka hopena o ka hāʻule ʻana o nā pōpō e wāwahi i nā mea i hana ʻia i nā ʻano liʻiliʻi a maikaʻi paha. Hoʻohana nui ʻia ka wili pōleʻa i ka mining, nā mea kanu sima a me nā ʻoihana metallurgy.