I think you are a little behind the times Mexican. You will find that Metex owns 100% of the technology developed by the CSIRO, they are no longer in a joint venture. In terms of UCG, Metex is using new technology just developed, Linc is using 60 year old Russian technology.
I'm also a little dumbfounded as to where you got the 2 years from as well. Metex is building a much larger trial UCG plant than Linc, and the first module is expected to be up and running in August this year. The processes used vary significantly between the two companies. You may like to do a little research.
From memory, the 2 years ahead came from a LNC ASX announcement, but I'll follow that up for you......
I have seen some publicity about Metex too while reading coverage on Linc, so not completly left out of the picture!