A man searches for scrap metal in the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala, March 21, 2023. REUTERS/Josue Decavele 

A man known as "Canche" poses for a portrait after working in the polluted waters of the Las Vacas river, where informal workers collect scrap metal from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala March 21, 2023. REUTERS/Josue Decavele 

A man carries scrap metal collected from the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala, March 21, 2023. REUTERS/Josue Decavele 

A men searches for scrap metal in the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala March 21, 2023. REUTERS/Josue Decavele 

Man searches for scrap metal in the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala, March 21, 2023. REUTERS/Josue Decavele 

Man searches for scrap metal in the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala, March 21, 2023. REUTERS/Josue Decavele 

A man searches for scrap metal in the polluted waters of the Las Vacas river, where informal workers salvage items from Guatemala's largest landfill, ahead of World Water Day in Guatemala City, Guatemala March 21, 2023. REUTERS/Josue Decavele 

People stand near unattended check-in counters, as Airport workers at Cologne Bonn Airport protest during a strike called by German trade union Verdi, in Cologne, Germany, February 27, 2023. REUTERS/Thilo Schmuelgen 

Donald Price, a worker at the I. Schumann & Co. metals plant walks to get a ride from his daugter after an explosion at the factory in Bedford, Ohio, U.S., February 20, 2023. REUTERS/Aaron Josefczyk 

Two unnamed workers walk away from the I. Schumann & Co. metals plant after an explosion at the factory in Bedford, Ohio, U.S., February 20, 2023. REUTERS/Aaron Josefczyk 

Two unnamed workers walk away from the I. Schumann & Co. metals plant after an explosion at the factory in Bedford, Ohio, U.S., February 20, 2023. REUTERS/Aaron Josefczyk 

A man walks past a slogan which reads "Anger rumbles, all the workers in the street" painted on a temporary metal-sheets wall, in reference to protests against French government's pension reform plan, in Nantes, France, February 2, 2023. REUTERS/Stephane Mahe 

A worker solders metal structure of a swing boat under-construction at a workshop where local welders take the challenge of creating amusement parks from scratch in Sanaa, Yemen December 7, 2022. REUTERS/Khaled Abdullah 

Workers of German car maker Mercedes shout slogans during a protest of Germany’s industrial IG Metall union for a pay rise of eight percent in Ludwigshafen, Germany, November 16, 2022. REUTERS/Timm Reichert 

Workers of German car maker Mercedes shout slogans during a protest of Germany’s industrial IG Metall union for a pay rise of eight percent in Ludwigshafen, Germany, November 16, 2022. REUTERS/Timm Reichert 

Workers of Germany’s mighty industrial IG Metall union use whistles during a protest for a pay rise of eight percent in Ludwigshafen, Germany, November 16, 2022. REUTERS/Timm Reichert 

A worker of Germany’s mighty industrial IG Metall union uses a whistle during a protest for a pay rise of eight percent in Ludwigshafen, Germany, November 16, 2022. REUTERS/Timm Reichert 

Workers of German car maker Mercedes march during a protest of Germany's industrial IG Metall union for a pay rise of eight percent in Ludwigshafen, Germany, November 16, 2022. REUTERS/Timm Reichert 

A worker operates machinery at metal and plastic producer Tisa Komerc's plant in in Zepce, Bosnia, September 21, 2022. REUTERS/Dado Ruvic 

A worker pours sand into a metal core box at Mitchell Aerospace, a manufacturer of light alloy sand castings in Montreal, Quebec, Canada September 9, 2022. REUTERS/Christinne Muschi 

Canadian Prime Minister Justin Trudeau learns about sheet metal with sheet metal workers at the Ontario Sheet Metal Workers Training Centre in Oakville, Ontario, Canada September 2, 2022. REUTERS/Carlos Osorio 

Canadian Prime Minister Justin Trudeau meets with sheet metal workers at the Ontario Sheet Metal Workers Training Centre in Oakville, Ontario, Canada September 2, 2022. REUTERS/Carlos Osorio 

Canadian Prime Minister Justin Trudeau meets with sheet metal workers at the Ontario Sheet Metal Workers Training Centre in Oakville Ontario, Canada September 2, 2022. REUTERS/Carlos Osorio 

Canadian Prime Minister Justin Trudeau meets with sheet metal workers at the Ontario Sheet Metal Workers Training Centre in Oakville, Ontario, Canada September 2, 2022. REUTERS/Carlos Osorio 

Canadian Prime Minister Justin Trudeau meets with sheet metal workers at the Ontario Sheet Metal Workers Training Centre in Oakville, Ontario, Canada on September 2, 2022. REUTERS/Carlos Osorio 

Canadian Prime Minister Justin Trudeau learns about sheet metal with sheet metal workers at the Ontario Sheet Metal Workers Training Centre in Oakville, Ontario, Canada September 2, 2022. REUTERS/Carlos Osorio 

Canadian Prime Minister Justin Trudeau learns about sheet metal with sheet metal workers at the Ontario Sheet Metal Workers Training Centre in Oakville, Ontario, Canada on September 2, 2022. REUTERS/Carlos Osorio 

Canadian Prime Minister Justin Trudeau meets with sheet metal workers at the Ontario Sheet Metal Workers Training Centre in Oakville, Ontario, Canada September 2, 2022. REUTERS/Carlos Osorio 

Canadian Prime Minister Justin Trudeau learns about sheet metal with sheet metal workers at the Ontario Sheet Metal Workers Training Centre in Oakville, Ontario, Canada September 2, 2022. REUTERS/Carlos Osorio 

Canadian Prime Minister Justin Trudeau meets with sheet metal workers at the Ontario Sheet Metal Workers Training Centre in Oakville, Ontario, Canada September 2, 2022. REUTERS/Carlos Osorio 

A worker at Evtec Aluminium Ltd sands excess metal off a freshly made aluminium part at the company's foundry which makes parts for diesel engines, in Kidderminster, Britain, August 11, 2022. REUTERS/Nick Carey 

Workers load scrap metal onto a truck at collection point in Hopley, a poor settlement about 15 kilometres west of Zimbabwe's capital, Harare, Zimbabwe, July 22, 2022. REUTERS/Philimon Bulawayo 

A worker removes pieces of metal from the galvanising bath inside the factory of Corbetts The Galvanizers in Telford, Britain, June 28, 2022. REUTERS/Phil Noble 

A worker removes pieces of metal from the galvanising bath inside the factory of Corbetts The Galvanizers in Telford, Britain, June 28, 2022. REUTERS/Phil Noble 

A worker walks past freshly galvanised pieces of metal inside the factory of Corbetts The Galvanizers in Telford, Britain, June 28, 2022. REUTERS/Phil Noble 

A worker prepares pieces of metal to be galvanised inside the factory of Corbetts The Galvanizers in Telford, Britain, June 28, 2022. REUTERS/Phil Noble 

A worker prepares pieces of metal to be galvanised inside the factory of Corbetts The Galvanizers in Telford, Britain, June 28, 2022. REUTERS/Phil Noble 

A worker prepares pieces of metal to be galvanised inside the factory of Corbetts The Galvanizers in Telford, Britain, June 28, 2022. REUTERS/Phil Noble 

A worker walks past freshly galvanised pieces of metal inside the factory of Corbetts The Galvanizers in Telford, Britain, June 28, 2022. REUTERS/Phil Noble 

A worker removes pieces of metal from the galvanising bath inside the factory of Corbetts The Galvanizers in Telford, Britain, June 28, 2022. REUTERS/Phil Noble 

A worker removes pieces of metal from the galvanising bath inside the factory of Corbetts The Galvanizers in Telford, Britain, June 28, 2022. REUTERS/Phil Noble 

Workers put up metal barricades outside a residential compound that is under lockdown following the coronavirus disease (COVID-19) outbreak, in Chaoyang district of Beijing, China June 12, 2022. REUTERS/Martin Pollard 

A worker carries metal sheets while installing a barricade around a residential area under lockdown, amid the coronavirus disease (COVID-19) outbreak in Beijing, China June 10, 2022. REUTERS/Carlos Garcia Rawlins 

A worker cuts metal sheets while installing a barricade around a residential area under lockdown, amid the coronavirus disease (COVID-19) outbreak in Beijing, China June 10, 2022. REUTERS/Carlos Garcia Rawlins 

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