Manganese nodules lying on the ocean floor beyond national jurisdiction and containing such strategic minerals as cobalt, copper, manganese and nickel are currently considered to constitute the highest-valued deep ocean mineral resource and regarded by many as the "common heritage of mankind". Not surprisingly, the exploitation of minerals from the sea bed was one of the most controversial issues discussed at the Third United Nations Conference on the Law of the Sea from 1973 to 1982, which led to the adoption of a new Convention on the Law of the Sea in Jamaica in December of 1982. However, the still ongoing international debate on the Convention I s regime to govern deep-sea mining reveals that the central economic problems involved are far from being defi nitely settled. In view of the importance of this issue, the Kiel Institute of World Economics launched in 1980 a major research project on allocational and distributional aspects of the use of ocean resources. A comprehensive analysis and evaluation of the new Law of the Sea Convention has al ready been published (see Wilfried Prewo et al., Die Neuordnung der Meere - Eine okonomische Kritik des neuen Seerechts. Kieler Studien No. 173. Tlibingen: J.C.B. Mohr, 1982).

This volume discusses environmental issues associated with deep-sea mining, with an emphasis on potential impacts, their consequences and the policy perspectives. The book describes the methods and technologies to assess, monitor and mitigate mining impacts on marine environments, and also suggests various approaches for environmental management when conducting deep-sea mining. The volume brings together information and data for researchers, contractors, mining companies, regulators, and NGOs working in the field of deep-sea mining. Section 1 highlights the various environmental issues and discusses methods and approaches that can help in developing environmentally sustainable deep-sea mining. Section 2 details the results and outcomes of studies related to impact assessment of deep-sea mining, and proposes methods for monitoring. Section 3 discusses the need and means for developing data standards and their application to deep-sea mining. Section 4 discusses the policies, approaches, and practices related to deep-sea mining, suggests formats for developing environmental impact statements (EIS) and environmental management plans (EMP), and describes national and international regulations for environmental management. Section 5 concludes the text by putting deep-sea economic activities into an environmental context and conducting techno-economic analyses of deep-sea mining and processing.

This comprehensive book contains contributions from specialists who provide a complete status update along with outstanding issues encompassing different topics related to deep-sea mining. Interest in exploration and exploitation of deep-sea minerals is seeing a revival due to diminishing grades and increasing costs of processing of terrestrial minerals as well as availability of several strategic metals in seabed mineral resources; it therefore becomes imperative to take stock of various issues related to deep-sea mining. The authors are experienced scientists and engineers from around the globe developing advanced technologies for mining and metallurgical extraction as well as performing deep sea exploration for several decades. They invite readers to learn about the resource potential of different deep-sea minerals, design considerations and development of mining systems, and the potential environmental impacts of mining in international waters.