Freeport-McMoRan chief executive Richard Adkerson said his company is set to approved expansion plans at several of its copper mines in the United States to capitalize on surging demand for copper that is expected to come as President Joe Biden moves to electrify the nation’s automobiles and combat climate change.

Freeport-McMoRan is the largest copper producer in the United States and produces more than 1 billion lbs of copper each year. While the company opened a new U.S. mine last year in Arizona, it could soon greenlight expansions at three mines in the U.S. Southwest, Adkerson said, adding more than 250 billion pounds of copper each year to U.S. output.

Reuters reported that Adkerson also said he has no desire to combine Freeport with Barrick Gold Corp or another gold producer and is working to give COVID-19 vaccines to about 25,000 workers at the Grasberg copper mine in Indonesia, which Freeport owns with that country’s government. He also is aiming to double the size of the company’s board of directors.

“President Biden clearly has a commitment to addressing climate change, and any climate change initiative creates demand for copper,” said Adkerson, who became Freeport’s chairman. “We’re very well-situated to address that with the assets we have.”

Biden met with lawmakers on Feb. 24 to discuss how to secure supplies of electric vehicles and the minerals used to make them.

Just a year ago, Freeport worried about “our ability to continue operating” due to the coronavirus pandemic, Adkerson said. With copper prices hovering near $2 a pound last April, the company was forced to make budget and dividend cuts.

Copper is a key barometer of economic health due to its use in manufacturing. In the last six months, copper prices have slowly rebounded to just above $4 a pound and Freeport’s stock has more than doubled.

“Now we can turn our attention to focusing on these growth opportunities,” Adkerson said, adding that any expansions would take several years to bring online. That timeline implies the company remains bullish on copper for the long run.

The option to expand existing mines, rather than building new ones, gives Freeport an advantage over its rivals, Adkerson said. Rio Tinto Plc, for instance, is trying to build the Resolution Copper mine in Arizona, a project that Native Americans oppose on religious grounds. Adkerson declined to comment on that dispute.

The combination of Freeport’s improving sales and stock price has seemingly shooed away potential bidders, including Barrick. Last year, Barrick CEO Mark Bristow expressed interest in Freeport-McMoRan.

At the time, Barrick’s market value was twice that of Freeport. Now, given its stock surge, Freeport is worth $20 billion more than Barrick. Bristow told investors his first priority now is to expand the assets Barrick already owns.

“I don’t believe it makes sense to combine a company like ours with a gold company,” Adkerson said. “But I don’t criticize Mark (Bristow) for thinking we have good assets.”

Freeport’s commitment to copper, Adkerson said, will remain and the company will avoid lithium, rare earths and other EV metals that are getting more attention on Wall Street. Adkerson, who has been CEO since 2003 and is now 74, said he has no plans to retire.

“We’re on the verge of really great success, and thank God I’ve got the health and energy to be a part of it,” he said.