Ann: Quarterly Activities Report - 3 Months Ended 31 Dec 2016, page-2

This statement shows just how poor the feasibility process was :

Drilling has confirmed that as mining gets deeper, the weathering will reduce such that the hard granite rock becomes the principal ore feed to the processing plant. A gradual transition from the soft ore currently being experienced to the harder granite is expected and should result in improvement in recoveries and processing plant throughput. A small trial batch of coarse ore was fed into the processing plant during the Quarter with improvement in throughput and recovery noted