Harmony Gold’s share price closed down 4.45% to R59.02 on Monday after it announced that four miners died in an infrastructure maintenance-related incident at its Kusasalethu mine, near Carletonville in Gauteng, at the weekend.

Harmony Gold spokesperson Sihle Maake told Business Day six employees were cleaning an underground mud dam and repairing a pipe as part of safety work on Saturday afternoon when the mud wall fell onto the workers. Two of the six employees escaped unharmed...