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Mining robot stranded on Pacific Ocean floor in deep-sea mining trial

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A seabed mining robot being tested on the Pacific Ocean floor at a depth of more than 13,000 ft has become detached, the Belgian company running the experimental trial said on Wednesday.

Global Sea Mineral Resources (GSR), the deep-sea exploratory division of dredging company DEME Group, has been trialing Patania II, a 25-tonne mining robot prototype, in its concession in the Clarion Clipperton Zone since April 20.

The machine is meant to collect the potato-sized nodules rich in cobalt and other battery metals that pepper the seabed in this area, and was connected to GSR’s ship with a 5km cable.

“On its final dive in the GSR area, a lifting point separated and Patania II now stands on the seafloor,” a GSR spokesman said in an emailed statement.

“An operation to reconnect the lifting point begins this evening and we will provide an update in due course.”

The GSR trial is being observed by independent scientists from 29 European institutes who will analyze data and samples collected by the robot in order to measure the impact of seabed mining.

Rocks called 'polymetallic nodules' are seen on the seabed in the Clarion Clipperton Zone of the Pacific Ocean, April 2021.
Rocks called “polymetallic nodules” are seen on the seabed in the Clarion Clipperton Zone of the Pacific Ocean, April 2021.
Reuters

While several companies and countries have seabed exploration contracts, regulations governing deep-sea mining have not yet been finalized by the International Seabed Authority, a U.N. body.

Critics, including environmentalist David Attenborough, say seabed mining is untested and has a largely unknown environmental impact. Google, BMW, AB Volvo, and Samsung SDI have backed a call for a moratorium on deep-sea mining.

GSR has said it will only apply for a mining contract if the science shows that deep seabed minerals have advantages, from an environmental and social perspective, over relying solely on land mining.

Patania II, a 25-tonne seabed mining robot, is lowered into the Pacific Ocean to begin a descent to the sea floor, in the Clarion Clipperton Zone of the Pacific Ocean, April 2021.
Patania II, a 25-tonne seabed mining robot, is lowered into the Pacific Ocean to begin a descent to the sea floor, in the Clarion Clipperton Zone of the Pacific Ocean, April 2021.
Reuters

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