Sibanye-Stillwater calls for mega-merger with AngloGold, Gold Fields Sibanye Stillwater said AngloGold Ashanti and Gold Fields Ltd. both fit with the company’s acquisition strategy. ( Sibanye-Stillwater (NYSE: SBGL) said today that South Africa’s top gold miners should merge and create a rival to the world’s largest producers, Newmont (TSX: NGT; NYSE: NEM) and Barrick Gold (TSX: ABX; NYSE: GOLD), or risk being acqui CEO Neal Froneman said he believed that combining his company with Gold Fields (NYSE: GFI) and AngloGold Ashanti (NYSE: AU) would be in South Africa’s national interest, Johannesburg-based Sibanye, formed by spinning off Gold Fields’ oldest South African mines in 2013, has been growing the business since.