Late last year, I wrote about Castillo Copper Limited (ASX: CCZ) which announced some great results from their Cangai Copper Mine.  I was immediately intrigued. However, things did not go well for them as there were some environmental issues which appear to have been sorted out with their reinstatement to the Australian Stock Exchange (ASX).  Cangai Copper Mine in northern New South Wales is still one of Australia’s highest grading historic copper mines with a JORC inferred resource of 3.2Mt @ 3.35% Cu.