This mining process success really boils down to one thingAll the basher rhetoric aside, here is a response from a very experienced chemist familiar with solution mining in Saskatchewan to a question on another site relating to the chances of mastering the process of a feasible horizontal potash selective solution mine in Saskatchewan.
"The question that needs to be asked is "Are they getting sustained saturated KCl brines (preferably close to19% from the mine?"If they can do this, or anyone else can do this, from a hot recycled brine feed, they have sucessfully mastered selective solution mining. This has been the challenge for the last 60 years."