There are other threads, but Lew's thread dates back to 3/02/2008, only three years ago.
Updated Magnesium Halibrand thread
Assuming Halbrand makes a new magnesium wheel, I don't believe, from what I understand, Halibrand will use M&A Castings. They may be manufactured in another country. Does that still interest "you"?
The order is too small for the big wheel companies to tackle and likely too large for the small guy to handle.
I thought this would be appropriate....