Here is our waste. It's High Level Waste from the only commercial spent nuclear fuel reprocessing facility to operate in the US. That waste has been vitrified and poured into stainless steel canisters and sealed with a welded lid. Five sealed canisters are placed into a stainless steel canister which is also sealed with a welded lid. Each larger canister is currently stored in a steel-lined concrete cask. All of this is awaiting a suitable disposal facility where it can be stored for eternity. It would be pretty difficult for someone to get to it!
