"
In fact the production of 1,000 tons of uranium fuel typically generates 100,000 tons of tailings and 3.5 million litres of liquid waste (Cunningham et al, 2003).
The amount of sludge produced is nearly the same as that of the ore milled. At a grade of 0.1% uranium, 99.9% of the material is left over. As long-lived decay products such as thorium-230 and radium-226 are not removed, the sludge contains 85% of the initial radioactivity of the ore. In addition, the sludge contains heavy metals and other contaminants such as arsenic, as well as chemical reagents used during the milling process.
Still, the volume of waste is not the main problem associated with nuclear waste. The main problem is that high-level waste remains dangerously radioactive for up to 240,000 years "
http://www.motherearth.org/energy/nuclear7.php
Totalno "ekološki", posebice kad se uzme u obzir trajanje raspada tog otpada... Prije će se raspast spremnici tog otpada,nego sam otpad..