The accumulation of this dust make for an explosive nuclear criticality accident that had to vaporize the uranium powder to end the reactions. Similar fission reactions can occur in UF6 solid to vapor phase systems and are a nuclear criticality, but the temp to melt and displace the fission critical mass is low and generally not explosive. The ORNL is also conducting flawed experiments designed not to prove the UF6 migration in the fuel tanks by performing the experiment at temperatures too low to make the UF6 a gas. UF6 sublimes and goes directly from a solid to a gas. Workers smelled flourine odors and other.
Some workers have high uranium levels in their body.
ORNL continues to deny there was any accident, that any workers were exposed, or any releases ever occured from this leaking reactor and its imporperly stored fuels. ORNL manager now openly lie to the public in the concealments of their illegal activities at the lab. These same ORNL managers now lie about the dangers of Sr-90 and it affects on the residents and workers. ORNL managers that are despirate to cover up the immune system diseases produced by these type releases. These tons of uranium washed into drains and lagoons producing fission problems also.