Press Release – Greenpeace One of the worlds first deep sea mining pilot tests has resulted in a huge machine being stuck on the seafloor of the Pacific Ocean. A broken cable has resulted in the mining company Global Sea Mineral Resources (GSR) losing control of its 25-tonne … One of the world’s first deep sea mining pilot tests has resulted in a huge machine being stuck on the seafloor of the Pacific Ocean. A broken cable has resulted in the mining company Global Sea Mineral Resources (GSR) losing control of its 25-tonne robot ‘nodule collector’ Patania II on the deep seabed. GSR has confirmed that “the connection between the Patania II and the cable has indeed come loose, so that Patania II is currently on the seabed.”