A company may only hold up to 20% of issued capital in a company. If they want to exceed this they need to launch a formal take over bid. Nothing to stop this happening, BUT you would definitely know about it if they did.
The FIRB decision would be an interesting one. There has been a bit more leniency in recent times with transactions with the Chinese in particular, BUT the AB deposit is signficant which would be a major concern in the approval process.
KZL Price at posting:
83.0¢ Sentiment: Buy Disclosure: Held