ʻOi aku ka haʻahaʻa o ka hana hoʻoheheʻe ʻana o ka DTH drilling rig open-pit ma mua o ka hammer drilling rig, akā ʻoi aku ka maikaʻi o ka hana o ka DTH drilling rig ma lalo o nā koi o nā diameters nui a me nā hohonu o ka ʻoi aku ma mua o 30 mika. Inā ʻoe e ʻimi nei i nā pōmaikaʻi waiwai, manaʻo wau e koho i kahi wili wili saparated. Inā ʻoe e ʻimi nei i ka maikaʻi o ka hana a me ka palekana o ka hana, manaʻo wau e kūʻai i kahi rig drilling integrated. E hana mākou i ka hoʻolālā wili pōhaku maikaʻi loa no ʻoe e like me kāu makemake.