FILE PHOTO: Mercury is swilled about in a gold pan to gather the gold from the dirt at a mining site in Bawdie, Ghana, April 4, 2019. REUTERS/Francis Kokoroko/File Photo
FILE PHOTO: Mercury is swilled about in a gold pan to gather the gold from the dirt at a mining site in Bawdie, Ghana, April 4, 2019. REUTERS/Francis Kokoroko/File Photo