Deep-Sea Mining Technologies: Recent Developments and Challenges

Dear Colleagues,

More than a half century has passed from the first recognition of the potential of deep-sea minerals for future metal sources. At the time, it was considered technologically and economically easier to realize deep-sea mining. Many scientific, technological, and environmental advancements have been made over these 50 years. Nevertheless, no venture has started full-scale mining activity. Because many on-site experiments have been successful in recent years, it seem as if a new era of deep-sea mining is coming soon. However, some technological, economical, and environmental challenges still need to be addressed to realize deep-sea mining. In addition, a strong anxiety over the ecosystem impacts of mining operations in deep-sea areas is arising. In this Special Issue, the current status of deep-sea mining technologies and new challenges are introduced.

Prof. Dr. Tetsuo Yamazaki
Dr. Sup Hong
Dr. Rahul Sharma
Guest Editors

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• distribution characteristic of deep-sea mineral resources
• acoustic characteristics of deep-sea mineral resources
• geotechnical properties of deep-sea sediments and substrate rocks
• geotechnical properties of seafloor massive sulfides and cobalt-rich ferromanganese crusts
• miner propulsive technologies
• cutting and excavating technologies for miners
• track control for miners
• automotive control for miners
• pump-lifting technologies
• air-lifting technologies
• riser pipe dynamics
• platform and riser dynamics
• environmental assessments in deep-sea mining
• economic evaluations in deep-sea mining