The Interior Department has renewed two controversial mining leases for Ivanka Trump’s billionaire Chilean landlord despite significant fears the operation will destroy a pristine Minnesota wilderness area.

The announcement Wednesday by the Bureau of Land Management is a “continuation of the Trump Administration’s assault on the Boundary Waters Wilderness,” said a statement by the nonprofit advocacy group Save The Boundary Waters. The group says the Trump administration’s environmental review of the project was “wholly insufficient to determine the impact of sulfide-ore copper mining.”

Interior Undersecretary Joe Balash said that extending the leases for 10 years “balances” conservation policies with the “need to produce minerals that add value to the lives of all Americans.”

Minnesota businesses and environmentalists went to court to block the mining operation planned by a local subsidiary of Chilean copper conglomerate Antofagasta. The family-owned company is headed by Chilean businessman Andrónico Luksic, who bought a $5.5 million mansion in Washington shortly after Donald Trump won the presidency. Luksic now rents the 7,000-square-foot mansion to the first daughter and her husband Jared Kushner at a bargain $15,000 a month, The Wall Street Journal has reported.

The Antofagasta subsidiary plans to extract copper and nickel in a sulfide-ore mine in Minnesota’s Rainy River watershed, which drains into the popular 1.1 million acre Boundary Waters wilderness area.

Former chief ethics attorney for George W. Bush Richard Painter raised questions about the link between Luksic and his tenants on Twitter: