The partial collapse of a waste dam at a Chinese state-owned copper mine in Zambia may have released 30 times more toxic sludge into the environment than previously reported, according to an independent evaluation of the disaster. At least 1.5 …
The partial collapse of a waste dam at a Chinese state-owned copper mine in Zambia may have released 30 times more toxic sludge into the environment than previously reported, according to an independent evaluation of the disaster. At least 1.5 …