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ʻO ke kōmike ʻana o Jumbo ma lalo o ka Lead a me Zinc Mine
I ka ʻeli ʻana ma lalo o ka honua, he mea hana nui nā drill rigs no ka unuhi pono ʻana i nā minerala waiwai a me nā ores.ʻO ka wili jumbo/drilling rig he ʻāpana ikaika o nā mea hana i hoʻohana ʻia no ka wili ʻana i nā lua ma nā ʻili pōhaku paʻa no ka hana ʻana a me ka hana tunneling.ʻO kā mākou mea hoʻoheheʻe hydraulic ...Heluhelu hou aku