2010-2011
- Initial potash land package secured, including approximately 5,120 owned acres and over 21,000 acres under state exploration permits
- Acquired 50 sections of potash mineral rights totaling approximately 31,000 acres
- Secured mineral rights on 101 adjacent/contiguous private sections totaling approximately
- 63,000 acres (in addition to the company’s 31,000 acres)
- North Rim resource estimate/Tetra Tech Preliminary Economic Assessment completed
- Completed phase I drilling –13 holes
- Completed seismic program
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2012
- Completed phase II drilling program –10 holes
- Updated North Rim resource estimate completed (NI 43-101 Resource Report)
- Upgraded nearly 40% of the resource estimates from the “inferred” to the “measured and indicated” category
- Tetra Tech completed Cost Feasibility Study for a 2.2 million ton per annum project
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2013
- Completed Pre-Feasibility Study
- $825 million capital cost
- Received Air Permit from ADEQ
- Completed final phase III and IV infill drilling program -17 holes
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2014-2016
- Submitted Mineral Development Report to Arizona State Land Department
- Received long term mineral leases from the Arizona State Land Department for 34 state land sections
- Received an amended long term mineral lease from Arizona State Land Department with an additional 24 sections –58 state sections in total
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2017-2018
- Complete potash project Definitive Feasibility Study (DFS)
2019-2022
- Evaluate possibility of building solution mine instead of underground mine.
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