I believe that one of the future big DLE producers will be E3 Metals in Alberta. To me, E3 provides a similar investment opportunity now as LAC did three years or so ago. Your article identifies the challenges of developing a DLE process specific to the resource. E3 has acheived this in a protoype plant and is now almost ready to commission a lab pilot plant (end Oct), with a field pilot plant planned for next year. 

Sorry for plugging another stock on our forum, just wanted my LAC friends to be aware of what I think is a diamond in the rough.