Loaʻa i ka hui ka mākaukau ʻenehana alakaʻi honua a me ka pae ʻenehana kiʻekiʻe ma ka wahi o ka mīkini ʻenekinia hydraulic. Eʻimi mālie a loaʻa iā ia ka mākeke mea hydraulic o kekahi pālākiō ma china, no laila e loaʻa ai ka lokomaikaʻi a me ke kākoʻo mai ka nui aʻe o nā mea kūʻai aku. ʻenekinia kīwila, ʻenekinia wehe ʻana, ʻenekinia kūikawā (ʻenekinia lalo wai, tunneling). ʻOiai i loko o nā wahi maikaʻi ʻole, ua loaʻa i kāna hana hohonu a me ka ʻōnaehana lawelawe ʻenehana piha i ka loiloi kiʻekiʻe o nā ʻelele nui, nā mea hoʻohana a me nā ʻoihana hoʻohui huahana.