ʻO ka mīkini ʻāhi metala ʻōpala nui kahi mea hana pono i hoʻohana nui ʻia i ka hana kila a me ka hana hou.Hiki i kēia mīkini ke ʻoki i nā mea e like me ke kila awāwa, I-beam, liʻiliʻi koʻu lanahu mine track, kihi kila, kaʻa hoʻokaʻawale ʻana i ke kila, kaula hao, pā moku me ka mānoanoa o 30 mm, kila poepoe me ke anawaena o 600-700 mm, etc. ʻO ka ikaika o kaʻokiʻana mai ka 60 tons a hiki i ka 250 tons, a hiki ke hoʻololiʻia e like me ka makemake o ka mea hoʻohana.Eia kekahi, no ka hoʻohana maʻalahi, ua hoʻolako pū ʻia kēia mīkini me ka hydraulic drive, e hana maʻalahi i ka hana a me ka mālama ʻana.