One of the small but persistent puzzles of the deep abyssal plain is the question of how polymetallic nodules manage to stay above the sediment. Large nodules form over millions of years as minerals precipitate out of seawater, and yet, despite a light dusting of sediment continuously raining down from the surface, they somehow remain […]
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Scattered across the abyssal plain at depths from 4000 to 6500 meters, polymetallic nodules are the most abundant and broadly distributed of the three major ore types currently being pursued by deep-sea mining companies. Originally referred to as manganese nodules, this small, potato-sized accretions on the seafloor were first discovered during the Challenger Expedition in […]
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Maria Bolevich for DSM Observer Global Sea Mineral Resources (GSR) is founded by Deme Group, a world leader in dredging, marine engineering and environmental remediation. In 2013, GSR and the International Seabed Authority entered into a 15-year contract for the exploration for polymetallic nodules in the Clarion-Clipperton Zone. Kris Van Nijen, the managing director of GSR, […]
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In 1989, the largest attempt to model the impacts of a deep-sea mining operation was conducted across 1100 hectares of seafloor in the Peru Basin. The Disturbance and Recolonization Experiment (DISCOL) simulated polymetallic nodule extraction by dragging an 8-meter plough-harrow across a nodule field, creating 78 troughs that mimicked one likely consequence of dragging a […]
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You can buy a 5-lb bag of polymetallic nodules from the Clarion-Clipperton Fracture Zone on Amazon, right now. Depending on your vantage point and how long you’ve participated in the deep-sea mining community, this will either come as a huge surprise or be completely unexceptional. Prior to the formation of the International Seabed Authority, there […]
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Chris Hinde for the Mining Beacon | 21 December 2018 In his presentation at the Mines and Money London conference in November, the CEO of DeepGreen Metals Inc., Gerard Barron, outlined the problems facing the global economy in the supply of sustainable metals and minerals, and the role this private Vancouver-based company is planning to […]
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PortNews | 18 September 2018 Global Sea Mineral Resources (GSR), DEME’s subsidiary specialised in deep sea harvesting, has unveiled the nodule collector ‘Patania II’. The pre-protoype is the successor of the tracked soil testing device ‘Patania I’, which was successfully tested during a 2017 expedition in the Central Pacific Ocean, the company said in its […]
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JENCY SAMUEL on MONGABAY | 9 February 2018 Mining of polymetallic nodules present in the seabed in the Central Indian Ocean Basin can help India improve availability of nickel, copper, cobalt and manganese. Through an agreement with the International Seabed Authority, India has a right to explore and mine polymetallic nodules over 750,000 square km. […]
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TODD WOODY on OCEANS DEEPLY | 1 February 2018 As the International Seabed Authority (ISA) drafts regulations to govern the mining of the ocean for valuable minerals, the European Parliament has called for a ban on seabed mining until the environmental impacts and risks of disturbing unique deep-sea ecosystems are understood. In a resolution, the […]
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INTERNATIONAL SEABED AUTHORITY | 27 November 2017 JAMAICA, Kingston – – The International Seabed Authority and l’Institut Français de Recherche pour l’Exploitation de la Mer (IFREMER) have signed an Agreement on the extension of the exploration contract for polymetallic nodules in the Clarion Clipperton Zone. IFREMER entered into a 15-year contract for exploration for polymetallic […]
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