Ma lalo o ka lua dth hammer bit mea kūʻai mai Kina ke kumu kūʻai

Hoʻohana nui ʻia nā hāmare DTH a me nā bits i ka mining underground, quarries, hydraulic and Hydro-Power Engineering, wai luawai wai, Mineral exploration, anchoring hole drilling, geothermal engineering,

ʻO ka ʻeli ʻana i lalo, kahi ʻenekini kīwila ʻē aʻe. Ua loaʻa iā ia ka pōmaikaʻi o ka palahalaha kiʻekiʻe, ka paia o ka lua maʻemaʻe, ka paʻa kiʻekiʻe o ke koʻokoʻo drill a me ka hāmare, kūʻokoʻa i ke kī axial kiʻekiʻe, ʻaʻohe palena o ka hohonu o ka wili ʻana, nā kumukūʻai haʻahaʻa o nā mea hana a

maʻalahi e mālama.