As I read it, they acquired 100% of the company (100% of the...

As I read it, they acquired 100% of the company (100% of the shares). The details of what was acquired are covered on pg 87-88 of the 2008 annual report (at that stage, they had acquired 67.66%). Download the full report from the EMT corp web-site, not the smaller ASX copy.

I just noticed there that on top of the $19.4m spent to acquire the final $32.34% (in current financial year), they also appear to have paid $5.701m to the vendor in 2008, simply for the option of acquiring these shares.