Junior and emerging miners hold the majority of the 1 700 to 1 800 mining rights that have been issued in South Africa, Minerals Council South Africa social performance head Alex Khumalo said on Wednesday. But most of these rights are not being exercised, Khumalo revealed at a media briefing he conducted with Minerals Council junior miners leadership forum chairperson Errol Smart and Minerals Council junior and emerging miners’ desk head Grant Mitchell at the Investing in African Mining Indaba.