Why glass? Metal would react. Uranium is a metal too. Each of those tubes weighs about a half-kilo to a kilo.
Not switches, and not "metal". This was out of Afghanistan last november:
Italian Foreign Minister Renato Ruggiero said in Brussels, where he was attending an EU meeting, that all the information at the disposal of the Italian authorities pointed to all four journalists being dead.Cutuli, in what turned out to be her last story in Monday's newspaper, reported her discovery of a consignment of deadly Sarin nerve gas in an abandoned Taliban base at Farm Hada, an hour from Jalalabad.
She said she and Fuentes had discovered a carton containing 20 glass vials containing thick yellow liquid. The box was marked "Sarin Gas" in cyrillic lettering.
The pictures were floating around FR at the time. They looked identical to this stuff.