FILE PHOTO: Ingots of 99.99 percent pure silver are seen

FILE PHOTO: ngots of 99.99 percent pure silver are seen at the Krastsvetmet non-ferrous metals plant, one of the world’s largest producers in the precious metals industry, in the Siberian city of Krasnoyarsk, Russia November 22, 2018. REUTERS/Ilya Naymushin/File Photo