Metals and minerals industry

FILE - In this May 2, 2019, file photo a worker arrives for his shift at the U.S. Steel Clairton Coke Works in Clairton, Pa. A fire at U.S. Steel's massive coke plant outside Pittsburgh knocked a key pollution control system offline Monday, June 17, 2019. It triggered a health warning as officials monitored the air around the plant for signs of a release of toxic sulfur dioxide. It was the second fire since December at the coke works, the largest facility of its kind in the United States. The plant turns coal into coke, one of the raw materials of steel. (AP Photo/Gene J. Puskar, FILE)

A fishing boat speeds past an oil tanker in the distance in Fujairah, United Arab Emirates, Saturday, June 15, 2019. The Kokuka Courageous, one of two oil tankers targeted in an apparent attack in the Gulf of Oman, was brought to the United Arab Emirates' eastern coast Saturday. (AP Photo/Jon Gambrell)

FILE - This Dec. 13, 2016, file photo, shows the former Anaconda smelter smokestack behind sculptures of miners at the Anaconda Smelter Stack State Park viewing area in Anaconda, Montana. Residents in the nearby community of Opportunity are suing to get the Atlantic Richfield Co. to do a more thorough cleanup of arsenic in residential yards. The Montana Supreme Court ruled in December 2017 that they could move forward with their 2008 lawsuit. Arco appealed, arguing a state lawsuit shouldn't be able to interfere with an ongoing cleanup. The U.S. Supreme Court said Monday, June 10, 2019, it will hear the appeal. (AP Photo/Matt Volz, File)

FILE - In this Jan. 9, 2019, file photo, released by an official website of the office of the Iranian supreme leader, Supreme Leader Ayatollah Ali Khamenei speaks at a meeting in Tehran, Iran. Iran’s supreme leader has publicly chastised the country’s moderate president and foreign minister, saying he disagreed with the implementation of the 2015 nuclear deal they had negotiated with world powers. (Office of the Iranian Supreme Leader via AP, File)

FILE - This Oct. 20, 2015 file photo shows the Scunthorpe steel plant, now owned by British Steel, in Scunthorpe, England. Britain’s government pledged Tuesday May 21, 2019 to do its utmost to support British Steel amid reports the company is facing bankruptcy. (Anna Gowthorpe/PA via AP, File)

In this Sunday, May 19, 2019, photo released by the U.S. Navy, an MH-60S Sea Hawk helicopter from the "Nightdippers" of Helicopter Sea Combat Squadron 5 transports cargo from the fast combat support ship USNS Arctic to the Nimitz-class aircraft carrier USS Abraham Lincoln during a replenishment-at-sea in the Arabian Sea.(Mass Communication Specialist 3rd Class Jeff Sherman/U.S. Navy via AP)

ADDS LOCATION - In this Sunday, May 19, 2019, photo released by the U.S. Navy, the fast combat support ship USNS Arctic transports cargo to the Nimitz-class aircraft carrier USS Abraham Lincoln during a replenishment-at-sea in the Arabian Sea. (Mass Communication Specialist 3rd Class Jeff Sherman/U.S. Navy via AP)