Rand Refinery (Pty) Limited is the world's largest integrated single-site precious metals refining and smelting complex.
[3] Low-quality ingots would be received from the gold mines and then refined to 99.6% purity and then sold to the South African Reserve Bank for sale around the world on the London and Zurich bullion markets.
[4][self-published source][5] By 1922, the supply of gold to London was almost nonexistent and impacted the two major UK refiners, Johnson Matthey and Rothschild.
[2]: 104 Rand Refinery is one of five companies accredited as Good Delivery Referees by London Bullion Market Association (LBMA).
In recent years, Rand Refinery has evolved from a pure refiner of doré to a more rounded company emphasizing beneficiation.