gold is mined at greater and greater depths it i
gold is mined at greater and greater depths it i. The top ten deepest mines in the world. Kopanang Gold Mine. Operated by Harmony Gold Mining, Kopanang is lo ed in the Vaal River region in the Free State province of South Africa. The mine extracts gold from the Vaal and Crystalkop reefs at depths ranging from 1,350m to 2,240m. S tered mining comprising a single shaft system is used at Kopanang ...