Ann: Quarterly Activities & Cashflow Report, page-19

I suspect the average price per tonne in the 40s is due to the ore they were bringing in fron a 3rd party then processing and selling back. Most likely it resulted in a lower sale price as the buyer was supplying part of the feed. But as everyone is finally beginning to acknowledge that NSL never tells anyone when/why things dont go to plan and instead just starts spinning a new narrative without explaining what happened with the last one, its impossible to say for sure