FILE PHOTO: The Codelco El Teniente copper mine, the world’s largest underground copper mine is shown near Rancagua, Chile August 13, 2020. Picture taken through a window. REUTERS/Fabian Cambero
FILE PHOTO: The Codelco El Teniente copper mine, the world’s largest underground copper mine is shown near Rancagua, Chile August 13, 2020. Picture taken through a window. REUTERS/Fabian Cambero