I still have my Stanley thermos that I got in High School (for hunting trips). During college and since I use it almost every day. Did need to replace the stopper.
In the newspaper article I read the guy used XRF and other stuff and said the cup was completely safe. He tried to break the seal using a few different methods (hammer?, crowbar?) and failed. He said after testing it and trying to damage it that the cup was completely safe.
Then in the next paragraph he said something like “It is unbelievable to me that Stanley would use lead in the manufacture of their cup knowing the huge hazards that lead has. No other company uses lead, so why did Stanley!?”
Maybe he’s bi-polar.
Or he needs to research it more. Perhaps lead is longer lasting (my thermos is 40+ years old, no idea if it uses lead) and less cost.
Hey...when Mario Lemieux took it in his swimming pool, it sure did sink like it was made of lead!