FILE PHOTO: An informal gold miner mixes mercury with water and dirt in a plastic tub to extract gold at a site in Bawdie, Ghana, April 5, 2019. REUTERS/Francis Kokoroko/File Photo
FILE PHOTO: An informal gold miner mixes mercury with water and dirt in a plastic tub to extract gold at a site in Bawdie, Ghana, April 5, 2019. REUTERS/Francis Kokoroko/File Photo