BLM gives okay to Intrepid solution mine
Carlsbad, N.M.—The Bureau of Land Management (BLM), after taking more than two years assessing the environmental impacts, has given the go-ahead to Intrepid Potash Inc.’s plan to extract by solution mining the potash remaining in an inactive underground mine in the Carlsbad area. No one was available at Intrepid’s Denver headquarters to comment, but before the BLM decided the project required an environmental impact study (EIS), company officials indicated that the HB Solar Solution Mine, located 20 miles northeast of Carlsbad in Eddy County, could yield 150-200,000 tons of additional low-cost potash production in approximately two years. According to BLM, approval of the project was based on all of the alternatives analyzed in the project’s environmental impact statement and public comments received. The main environmental concern involved the source of and impact of water supplies required for the project’s solar ponds, which at peak usage is estimated to be approximately 2,000 gallons per minute over seven years. “Obviously the project required a lot of water, and we had to determine how much and what would be the impacts,” reported BLM Project Manager David Alderman, pointing out that some small amounts could be recovered and reused in the processing plant, but the majority would be lost from the evaporation ponds. BLM agreed in the EIS that the remaining potash in the underground pillars and walls of the inactive workings is no longer accessible through conventional methods. The Intrepid plan calls for injecting saline water into the mine workings and extracting the saturated mineral solution. This mineral-rich solution will then be pumped to the surface and transported through a series of surface pipelines to evaporation ponds. Once the solution evaporates in the ponds, the potassium-bearing salts will be harvested from the ponds and transported to a newly constructed mill for ore refinement. “The BLM has carefully reviewed the proposed project and determined that this project meets BLM’s requirement for balanced management of public lands” said Jim Stovall, BLM’s Carlsbad Field Manager. “The project allows for the development of potash minerals while protecting other resource values including air quality, water quality, wildlife, cave resources, and cultural resources.” Intrepid earlier indicated that it planned to hit the ground running with respect to developing the solutions mine once BLM approval was received.