FILE PHOTO: Gold bars are pictured at the Argor-Heraeus plant by Reuters August 3, 2022 By: Reuters August 3, 2022 1 FILE PHOTO: One kilo gold bars are pictured at the plant of gold and silver refiner and bar manufacturer Argor-Heraeus in Mendrisio, Switzerland, July 13, 2022. REUTERS/Denis Balibouse/File Photo Share 0 FacebookTwitterPinterestEmail Reuters