Workers weld metal debris in front of the Saratoga Hotel a day after it suffered an explosion, in Havana, Cuba May 7, 2022. REUTERS/Alexandre Meneghini 

Workers weld metal debris in front of the Saratoga Hotel a day after it suffered an explosion, in Havana, Cuba May 7, 2022. REUTERS/Alexandre Meneghini 

A worker wearing personal protective equipment (PPE), carries a metal sheet while installing a barricade around a residential area under lockdown, amid the coronavirus disease (COVID-19) outbreak in Beijing, China, May 4, 2022. REUTERS/Carlos Garcia Rawlins 

A worker adds a bag of carbon into a furnace full of scrap metal at the United Cast Bar Group's foundry in Chesterfield, Britain, April 12, 2022. Picture taken April 12, 2022. REUTERS/Phil Noble 

A worker stands next to a crucible used to carry molten metal at the United Cast Bar Group's foundry in Chesterfield, Britain, April 12, 2022. Picture taken April 12, 2022. REUTERS/Phil Noble 

A worker walks past a crucible containing molten metal at the United Cast Bar Group's foundry in Chesterfield, Britain, April 12, 2022. Picture taken April 12, 2022. REUTERS/Phil Noble 

A worker stands next to a crucible containing molten metal at the United Cast Bar Group's foundry in Chesterfield, Britain, April 12, 2022. Picture taken April 12, 2022. REUTERS/Phil Noble 

A worker stands next to a crucible containing molten metal at the United Cast Bar Group's foundry in Chesterfield, Britain, April 12, 2022. Picture taken April 12, 2022. REUTERS/Phil Noble 

A worker stands next to a crucible containing molten metal at the United Cast Bar Group's foundry in Chesterfield, Britain, April 12, 2022. Picture taken April 12, 2022. REUTERS/Phil Noble 

A worker stands next to a crucible containing molten metal at the United Cast Bar Group's foundry in Chesterfield, Britain, April 12, 2022. Picture taken April 12, 2022. REUTERS/Phil Noble 

A worker stands next to a crucible containing molten metal at the United Cast Bar Group's foundry in Chesterfield, Britain, April 12, 2022. Picture taken April 12, 2022. REUTERS/Phil Noble 

Workers take a break at Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

Workers take shelter during air raid at the underground bunker of Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

Workers take a break at Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

Workers take shelter during air raid at the underground bunker of Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

Workers take a break at Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

Workers take shelter during air raid at the underground bunker of Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

A worker walks past rolled steel products at Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

Workers roll steel products at Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

A worker walks past rolled steel products at Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

A worker walks past rolled steel products at Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

Workers take shelter during air raid at the underground bunker of Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

Workers take shelter during air raid at the underground bunker of Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

Workers take shelter during air raid at the underground bunker of Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

Workers prepare boxes of humanitarian aid at Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

A worker rolls a steel product at Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

Workers take a break at Zaporizhstal, Ukraine's third-biggest metals plant, as Russia's invasion of Ukraine continues, in Zaporizhzhia, Ukraine, March 30, 2022. Picture taken March 30, 2022. REUTERS/Marko Djurica 

A worker holds a gallon metal cooking oil can, in Jamila market,the wholesale market for food commodities, after the noticeable rise in the prices of flour and cooking oil, in Baghdad, Iraq, March 16,2022.REUTERS/Saba Kareem 

Workers labour at a metal factory in the industrial zone of Syria's rebel-held city of Al-Bab, Syria March 10, 2022. Picture taken March 10, 2022. REUTERS/Khalil Ashawi 

Workers labour at a metal factory in the industrial zone of Syria's rebel-held city of Al-Bab, Syria March 10, 2022. Picture taken March 10, 2022. REUTERS/Khalil Ashawi 

A worker sits metal remnants outside a factory at the industrial zone of Syria's rebel-held city of Al-Bab, Syria March 10, 2022. Picture taken March 10, 2022. REUTERS/Khalil Ashawi 

A worker carries a metal box at the industrial zone of Syria's rebel-held city of Al-Bab, Syria March 10, 2022. Picture taken March 10, 2022. REUTERS/Khalil Ashawi 

A worker sits next to metal remnant outside a factory at the industrial zone of Syria's rebel-held city of Al-Bab, Syria March 10, 2022. Picture taken March 10, 2022. REUTERS/Khalil Ashawi 

Construction workers cover with a metal plate parts of a painted slogan commemorating the 1989 Tiananmen Square crackdown, along the Swire Bridge at the University of Hong Kong (HKU) in Hong Kong, China January 29, 2022. The Chinese characters read: "cold-blooded". REUTERS/Jessie Pang 

Workers wearing protective suits to protect themselves from the coronavirus disease (COVID-19), set up a metal detector for a security check point at the Main Press Center ahead of the Beijing 2022 Winter Olympics in Beijing, China January 18, 2022. REUTERS/Fabrizio Bensch 

A worker wears a protective suit as a protection from the coronavirus disease (COVID-19), as he sets up a metal detector for a security check point at the Main Press Center ahead of the Beijing 2022 Winter Olympics in Beijing, China January 18, 2022. REUTERS/Fabrizio Bensch 

Workers wearing protective suits to protect themselves from the coronavirus disease (COVID-19), set up a metal detector for a security check point at the Main Press Center ahead of the Beijing 2022 Winter Olympics in Beijing, China January 18, 2022. REUTERS/Fabrizio Bensch 

A worker completes the metal finishing on stringers for the wings of the Global 7500 aircraft at Bombardier Saint-Laurent Manufacturing Centre in Montreal, Quebec, Canada November 22, 2021. Picture taken November 22, 2021. REUTERS/Christinne Muschi 

A worker completes the metal finishing on stringers for the wings of the Global 7500 aircraft at Bombardier Saint-Laurent Manufacturing Centre in Montreal, Quebec, Canada November 22, 2021. Picture taken November 22, 2021. REUTERS/Christinne Muschi 

A worker checks the metal finishing on stringers for the wings of the Global 7500 aircraft at Bombardier Saint-Laurent Manufacturing Centre in Montreal, Quebec, Canada November 22, 2021. Picture taken November 22, 2021. REUTERS/Christinne Muschi 

A worker checks the metal finishing on stringers for the wings of the Global 7500 aircraft at Bombardier Saint-Laurent Manufacturing Centre in Montreal, Quebec, Canada November 22, 2021. Picture taken November 22, 2021. REUTERS/Christinne Muschi 

A worker completes the metal finishing on stringers for the wings of the Global 7500 aircraft at Bombardier Saint-Laurent Manufacturing Centre in Montreal, Quebec, Canada November 22, 2021. Picture taken November 22, 2021. REUTERS/Christinne Muschi 

A worker completes the metal finishing on stringers for the wings of the Global 7500 aircraft at Bombardier Saint-Laurent Manufacturing Centre in Montreal, Quebec, Canada November 22, 2021. Picture taken November 22, 2021. REUTERS/Christinne Muschi 

View of the shop floor at metal parts producer Cromex in Prijedor, Bosnia and Herzegovina, November 15, 2021. Picture taken November 15, 2021. REUTERS/Dado Ruvic 

A worker welds at metal parts producer Cromex in Prijedor, Bosnia and Herzegovina, November 15, 2021. Picture taken November 15, 2021. REUTERS/Dado Ruvic 

A worker watches machinery at metal parts producer Cromex in Prijedor, Bosnia and Herzegovina, November 15, 2021. Picture taken November 15, 2021. REUTERS/Dado Ruvic 

A worker tests an electric moped at metal parts producer Cromex in Prijedor, Bosnia and Herzegovina, November 15, 2021. Picture taken November 15, 2021. REUTERS/Dado Ruvic 

A Palestinian worker handles metal plates used to crush olives at a traditional stone press during harvest season, as olive trees are considered both a revered cultural emblem and an economic necessity, near Nablus, in the Israeli-occupied West Bank, October 16, 2021. Picture taken October 16, 2021. REUTERS/Mohamad Torokman 

Workers weld metal bars at the site of a planned 1,320-megawatt power plant on the coastline near India's southern tip, in Udangudi, Tamil Nadu, India, October 13, 2021. Picture taken October 13, 2021. REUTERS/Sudarshan Varadhan 

A worker load cables in a metal shredder at an e-waste treatment facility as Palestinians turn e-waste into reusable metals, near Hebron in the Israeli-occupied West Bank, September 13, 2021. Picture taken September 13, 2021. REUTERS/Mussa Qawasma 

A worker cuts cables at an e-waste treatment facility as Palestinians turn e-waste into reusable metals, near Hebron in the Israeli-occupied West Bank, September 13, 2021. Picture taken September 13, 2021. REUTERS/Mussa Qawasma 

A worker loads cut cables with a forklift at an e-waste treatment facility as Palestinians turn e-waste into reusable metals, near Hebron in the Israeli-occupied West Bank, September 13, 2021. Picture taken September 13, 2021. REUTERS/Mussa Qawasma 

A worker holds electronic boards at an e-waste treatment facility as Palestinians turn e-waste into reusable metals, near Hebron in the Israeli-occupied West Bank, September 13, 2021. Picture taken September 13, 2021. REUTERS/Mussa Qawasma 

A worker breaks electronic boards at an e-waste treatment facility as Palestinians turn e-waste into reusable metals, near Hebron in the Israeli-occupied West Bank, September 13, 2021. Picture taken September 13, 2021. REUTERS/Mussa Qawasma 

Workers remove metal of a billboard next to housing that is being demolished to make way for construction work on a ring road in the district of Maadi, in the Egyptian capital Cairo, Egypt July 5, 2021. REUTERS/Amr Abdallah Dalsh 

Willy Solorzano, organizer for the local chapter of the Sheet Metal Workers union, poses for a portrait at the BYD electric bus factory in Lancaster, California, U.S., July 1, 2021. Picture taken July 1, 2021. REUTERS/Mike Blake 

Willy Solorzano, organizer for the local chapter of the Sheet Metal Workers union, poses for a portrait at the BYD electric bus factory in Lancaster, California, U.S., July 1, 2021. Picture taken July 1, 2021. REUTERS/Mike Blake 

A worker operates one of the metal cutting machines at Gent Machine Co.'s factory in Cleveland, Ohio, U.S., May 26, 2021. REUTERS/Timothy Aeppel 

A worker operates one of the metal cutting machines at Gent Machine Co.'s factory in Cleveland, Ohio, U.S., May 26, 2021. REUTERS/Timothy Aeppel 

A worker operates one of the metal cutting machines at Gent Machine Co.'s factory in Cleveland, Ohio, U.S., May 26, 2021. REUTERS/Timothy Aeppel