Toxic Spill at China-Owned Zambian Mine 30 Times Worse Than Estimated

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.

​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.