Outstanding Bawdwin Starter Pit PFS Results and Maiden Reserves Statement, page-55

Ross kindly responded. Essentially the rock characteristics change with depth. The top of the pit is classified as overburden, so in the absence of sufficient geotechnical data near the top of the pit, they've assumed 30 degree slope angles. They hope more data will allow them to improve the slope angles for the top of the pit. My take on this is that they've assumed worst case, and going back to John's comment in the conference call, this PFS was structured to eliminate operational risks. My other take is the DFS will either be the same or improve the results, and I expect the later with the China hanging wall and meingtha lode extensions to be included in the next resource update.