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Nature of Operations (Details)	Sep. 30, 2022 km²
NORI
Exclusive rights to explore for polymetallic nodules:
Area of exploration granted (in square km)	74,830
TOML
Exclusive rights to explore for polymetallic nodules:
Area of exploration granted (in square km)	74,713
Marawa
Exclusive rights to explore for polymetallic nodules:
Area of exploration granted (in square km)	74,990

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