Obuasi Gold Mine | Randgold Resources. Jersey, Channel Islands, 21 December 2015 On 16 September 2015, Randgold Resources Limited (Randgold) and AngloGold Ashanti Limited (AngloGold Ashanti) announced their intention to form a joint venture to redevelop AngloGold Ashanti's Obuasi mine in Ghana, subject among other things to the completion of satisfactory due .