DENVER, Dec. 13, 2012 /PRNewswire/ -- Prospect Global Resources, Inc. (NASDAQ: PGRX) ("Prospect Global") today announced an update on the third phase of drilling in pursuit of its bankable feasibility study.
Prospect Global has begun drilling for a third series of potash development wells in the Holbrook Basin, in Apache County, Arizona. Preliminary results are very consistent with those of 2011 and earlier 2012, indicating quality potash zones with low impurities. Prospect Global refined its disciplined potash coring procedures during its Phase 1 and Phase 2 drilling in 2011 and the first half of 2012, respectively. These wells are designed to increase confidence in "measured and indicated" resources, which can ultimately be converted to "proven and probable" reserves. Wells are drilled in dual completion – that is, the upper and lower parts of the well are encased with steel to ensure hole control but more importantly to eliminate the chance of contamination of the potash cores. The Company has drilled and cored 22 holes.
The Company extracted high-quality core samples, for which the assay analyses show a flat-lying potash resource with minimal faulting. These core samples allow the Company to define the geological profile of the potash and outline its lateral continuity. Core samples are critical to optimizing the mine plan with rock mechanics testing and maximizing the processing-plant recovery with metallurgical testing. The ongoing acquisition of data will enhance and validate the Company's operational assumptions as it prepares its definitive feasibility study.
PGRX was able to capitalize on existing drill-hole data from historical exploration wells drilled in the 1960s and 1970s. This data was used to calculate the mineral resource and to identify new drill-hole locations. The Phase 1 and Phase 2 drill programs confirmed and enhanced these historical results. The Phase 3 drill program is predominantly infill drill holes focused on converting the Company's "inferred" resource to the higher-confidence classifications of "measured and indicated" resource.