AFRICAN states are riding the wave of a gold rush, with global prices stabilising and mining technologies advancing. Here are the continent's ten largest gold-producing powerhouses per tonnage (t), according to the World Gold Council's latest stats. 1. Ghana – 127tKnown as the "Gold Coast", Ghana is Africa's largest gold producer. The country has a rich history of gold mining, dating back to the 15th century, and today, gold mining is a major part of its economy, contributing over 40% of its total export earnings. 2. Mali – 101tMali's gold mining industry, a crucial part of its economy, traces back…