I dont think the ISG technology was the problem. It was greed...

I dont think the ISG technology was the problem. It was greed and poor management that lead to environmental damage.
""It pursued commercial interests over environmental safeguards."

There are many other key factors that distinguish between the two projects, ie site selection is very important. I suggest you have a read at this.
http://www.lcke.com.au/Portals/87/Content/Documents/CorporateResponsibilty/LCK%20-%20FS07%20QLD%20SA%20-%20ONLINE.pdf

The technology is working in the right direction, that is why you see the African Carbon Energy and CCCC signed a deal with LCK because they see great value and potential in the technology under proper controls, whereas Linc energy was a lone project and had a 'black box' approach.