He kaʻa lawelawe kaʻa i hoʻohana nui ʻia ma nā ʻano mines a me nā hana hana tunnel.Hiki i nā mea kūʻai ke hoʻonohonoho i ka helu o nā noho e like me kā lākou makemake.Hoʻopuka ʻia nā kiʻi, me ke kihi huli nui, radius huli liʻiliʻi a me ka huli ʻana maʻalahi.Hoʻohana ka ʻōnaehana hoʻouna iā Dana gearbox a me ka torque converter e hoʻokūkū pololei.ʻO ka mīkini ka German DEUTZ brand, turbocharged engine me ka mana ikaika.ʻO ka mea hoʻomaʻemaʻe kinoea hoʻomaʻemaʻe ʻo Canadian ECS platinum catalytic purifier me ka muffler, ka mea e hōʻemi nui ai i ka ea a me ka leo pollution i loko o ka tunnel hana.I kēia manawa, he 13, 18, 25, 30 mau noho ma ka hoʻohana maʻamau.