Who owns who?

I was reading on The Age website an article about Lihir gold and the Ballarat Gold mine.

http://www.theage.com.au/news/business/lihir-gsjbw-at-odds-over-ballarat-gold-mine/2007/05/21/1179601330130.html

As I was reading through it I found out that Lihir Gold bought it out this year for $345 million. I was surprised by this as I didn't hear anything about it in the news, etc. Nearly everyday there is a company who is acquiring, merging or making an alliance with another company. Especially Google, Microsoft and IBM - some of the biggest companies in the world. It would be interesting to check some of the popular or well-known companies stakes in other companies, or who owns who.

Companies these days are getting bigger and bigger in a globalised world.

(oh and don't forget Yahoo as another big company, looking at purchasing Bebo I just read)