Here is a link from a Seattle newspaper!! It has a picture of the bottles
and an explanation.

http://seattlepi.nwsource.com/busine...y=1310&slug=Me
tal%20Beer%20Bottles
"mary" > wrote in message
...
> http://www.post-gazette.com/pg/04237/366764.stm
>
> The brewery has entered a partnership with Pittsburgh-based Alcoa Inc.,
the
> world's largest aluminum maker, to produce aluminum bottles that keep beer
> colder for longer, Alcoa officials said.
> Alcoa and Pittsburgh Brewing today were announcing that about 20,000 cases
> of the new aluminum bottle beer are being shipped out this week to many of
> the 28 states where Iron City is sold.
>
>