Based on the Proactive investors article dated 3/6/2014, China...

Based on the Proactive investors article dated 3/6/2014, China bauxtie imports from Guinea are costing more than AUD 100/tonne CIF . It also stated the current price in uSD has risen strongly to USD60/tonne. The South Johnstone deposits are virtually at surface & the mining & rehabilitation cost was stated at less than AUD13/tonne and previouly drilling by Volcan Holding already reported over 50 million tons.
So, just do the sum on 50m tonnes with a profit margin of AUD 20/tonne alone is huge .
We know it will be more than 50 million tonnes & we know demand exceed supply & price of bauxite is rising.