Harmony Gold Mining Co. is considering going further underground at the world’s deepest mine as South African producers find it harder to dig for dwindling ore reserves.
The nation’s top gold producer is studying mining beyond the current depth of about 4 kilometers (2.5 miles) at Mponeng to potentially extend the mine’s life by 20 to 30 years, Chief Executive Officer Peter Steenkamp said. Ore reserves below that level are “massive” and Harmony is exploring ways and the investment needed to tap them, he said.
