Matching Pairs Trial 7Online version Trial 7 by Martin Smith 1 The population grew like Abidjan’s; 2 Toxic mercury is used to aggregate the gold, 3 Suddenly everyone was earning money. 4 This massive open pit is the biggest mine in Isoko. 5 This piece of gold is worth about ten dollars. 6 Considering the giant scale of the pit, the final product seems meagre. and is then drained into the soil. and with this, the economy also became like Abidjan’s – says one man. Look! He’s washing out a tiny grain! Of gold! Hundreds of people work in tandem to dig out gold ore.