At a congressional hearing, one executive welcomed President Trump’s “starting gun” to begin mining. Democrats and Republicans clashed over environmental and business concerns.

The Metals Company, which has been trying for years to exploit battery materials strewn across the ocean floor, announced today that it has applied for a permit from the Trump administration to start commercially mining in international waters.

Deep-sea mining firm The Metals Co asked the Trump administration on Tuesday to approve its plans to mine the international seabed, making it the first such company to seek the government's permission to operate outside U.