Water Supply No. 5 Questions taken from Jones & Bartlett Fundamentals of Fire Fighter Skills (3rd Edition) Progress Indicator: Question 3 of 20 3.  Sometimes dams that hold tailings, the slurry of moist ground ore from which gold has been extracted, fail.  Six years ago a tailings dam in Romania ruptured, spilling about 100,000 cubic meters of liquid, which was laced with cyanide and heavy metals, into a local water shed.  What was the result?  Need Help? Choices: Many fish and other creatures were killed in nearby lakes and ponds Most fish and other creatures were killed for hundreds of miles of the Danube River system Any animal that contacted the water, as far away as a thousand miles, died