Johannesburg- and London-listed gold mining company Pan African Resources has joined Harmony Gold, DRDGOLD, Gold Fields and AngloGold Ashanti on the Van Eck Gold Miners’ GDX index, an exchange traded fund managed in the US. The GDX seeks to replicate the price and yield performance of the New York Stock Exchange’s Arca Gold Miners Index, which is intended to track the overall performance of gold mining companies.