Only less than 200m deep part can consider open cast. You can...

Only less than 200m deep part can consider open cast. You can see only D3U area with inferred resource at 197m deep. D3 and J area are 203m and 207m (target less than 200m but not yet) deep at this moment.

D3U area CV only 12.9MJ/kg (3080Kcal/kg), very very low quality raw coal. wash up to 20MJ/kg-4776kcal/kg(still low quality) yield 53.6%, average only 1.87m thick.

This part will be high cost and low quality coal open cast, almost worth nothing.