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Deep-sea mining firm Glomar Minerals and Australia’s Cobalt Blue Holdings have announced plans to build a mineral processing plant in the United States to refine metals extracted from the ocean floor, marking a major step in securing…

Deep-sea mining firm The Metals Company (TMC) is advancing plans to establish a U.S.-based seabed mining hub, even as the company faces widening financial losses and mounting operational costs. The Canada-based company is positioning its…