Illegal Chinese gold miners blamed for pollution, violence in Ghana

Facing mounting tensions, violence, and pollution, Ghana has stepped up the arrest and deportation of those illegal foreign miners in recent years. In June and July 2013 alone more than 4,500 illegal Chinese gold miners were deported. More recently, in August 2016, the government expelled about 30 illegal miners, the majority of them Chinese.
http://www.mining.com/illegal-chinese-gold-miners-blamed-pollution-violence-ghana/