Ann: $40M Underwritten Placement to Fully Fund Century Restart, page-87

Very interesting article on the treasure that is/can be tailings.

http://theconversation.com/treasure-from-trash-how-mining-waste-can-be-mined-a-second-time-59667

And another key message - one that has above been used as a detractor but is actually in a effect a positvie

There are two main reasons why this might be preferable to developing new mines. First, mining costs are reduced, as these materials have already been extracted from the ground. Second, the older the mine, the greater the proportion of the target commodity that is likely to be left over, because many older mining techniques had lower recovery rates than today’s technology.