Morocco-focused potash development company Emmerson has completed the feasibility study on the company’s 100%-owned Khemisset potash project, which has confirmed a post-tax net present value of $1.4-billion and an internal rate of return of 38.5% over an initial 19-year mine life. Total pre-production capital cost is estimated at $387-million, $19-million lower than that estimated in an earlier scoping study.