[Mailman-Users] help, how to copy list members to other list

[SaidaOnline.net]

Dear Sir

I am a user for mailman
I moderate about 12 mailman lists
I need a way to copy the members from one list to other one
I used to copy one page (letter) by one its too hard and take alot of 
time.

If it used mysql database I could dump it but I don't know where the 
data stored.

thanks

A. Nakouzi