Dmagus,
Very quickly,
Allana – IMO shows good promise because of relatively low cap requirements, T/O potential (i.e. BHP) and likelihood of securing JV partners (i.e. Chinese and Indians)
Western Potash – May struggle to raise capital currently estimated to be about $2.8B and likely to increase to about $3.2- 3.5B (as per K&S example). Its operating costs are also expected to be in the order of $130 -$150/t.