PROBLEM TO BE SOLVED: To continuously and efficiently explore a wide range on the seabed.;SOLUTION: A mining/exploration base 20 includes: a platform 21 which is arranged under the sea and erected on the seabed SB; a mining/exploration device 30 which is installed in the platform 21, and which forms a vertical hole VH in the seabed SB and makes a sample mined from the inside of the vertical hole VH slurry, so as to collect the slurry in an inspection cylinder 65; and an analysis device 60 which includes the inspection cylinder 65, and which analyzes the slurry in the inspection cylinder 65 under the sea.;SELECTED DRAWING: Figure 4;COPYRIGHT: (C)2018,JPO&INPIT
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