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据估计,太平洋底有丰富的锰或多金属结核.若与陆地相比的话,在陆地上开采这类金属每投资9美元其年产值只有1美元,而大洋中采矿每投资1美元每年可收回3美元:可以预计,这些海洋产的金属将只及陆地产金属价格的1/5或1/10. 据估计,大陆上这些金属矿产的储量为:镍0.54亿吨,铜4.60亿吨,钴0.015亿吨,锰2亿吨. 海洋,这个占地面积达3.62亿平方公里的地方,在那蔚蓝色的海水下面,据认为有15%的海底赋存着结核.这一粗略的估计与“挑战者号”考察所得
It is estimated that the Pacific Ocean is rich in manganese or polymetallic nodules. If compared to land, mining this type of metal on land costs only US$1 per US$9 in investment, and mining in the ocean can recover every US$1 in mining investment. $3: It can be expected that these ocean-producing metals will be only one-fifth or one-tenth the price of land-based metals. It is estimated that the reserves of these metal minerals on the mainland are: nickel 40 million tons, copper 460 million tons, cobalt This is 0.015 billion tons, and 200 million tons of manganese. In the ocean, which covers an area of 362 million square kilometers, under the blue sea, it is thought that 15% of the seabed has TB. This rough estimate and “ Challenger”