I never knew : there are gold mines (in production) in the USA, and right here in Colorado. An old friend from South Africa was here in Denver on a business trip; he works for AngloGold Ashanti that is headquartered in Johannesburg. The gold price has dropped about a third from its highs in recent years, but that is not stopping mines in South Africa from approaching the 4000 m mark (2.5 miles) underground. Eight of the world’s 10 deepest mines are found in one area in South Africa, says this mining technology website.
