RE: Market news3 Mar 2023 12:55
Tiny trace amounts are of no safety concern. It the concentration of elements, not what they are, that determines safety.
For instance, there is about 1 ton of radio active material per 2 million tons of Gypsum in annual production. This is so low level that it is consider normal background radiation and safe to use in household building material. pasteboard for your kitchen.
On the other hand, your employer PRE, hope to mine will result in waste that will contain 1000 tons per year of radioactive elements. This make it hazardous radioactive waste.