[Aldipower]

Did you ever forgot a cup of water somewhere? It fumed away after 2 weeks! All without boiling it. :-O Same applies to lead, especially if you heat it to 360 C.

[IgorPartola]

I mean you can do an experiment: put a gram of lead onto a hotplate at 360C, then weigh it after 2 weeks. I would really love to see your results.