49 NOVEMBER 2024 WorldWide Drilling Resource® PennDrill Manufacturing’s PD285H paddle mixer was specifically designed with water well and geothermal contractors in mind. It will mix sand-based grouts, as well as bentonite/polymers, with mixing times less than four minutes. Equipped with a variable speed piston pump, the PD285H can produce up to 20 gallons per minute with up to 500 psi. Heavy gauge steel ensures durability while quality hydraulic components offer reliability. The PD285H paddle mixer comes in several tank sizes and pump ranges to suit a variety of needs. PennDrill Manufacturing is a Valued WWDR Advertiser. Completion of Inaugural ISR Field Test Program Adapted from Information by Denison Mines Corp. Denison Mines Corp. completed the inaugural in-situ recovery (ISR) field test program at the Midwest Uranium Project in northern Saskatchewan, which is jointly owned by Denison and Orano Canada. The 2024 ISR field test program was designed to validate various specific characteristics of the Midwest Main deposit, and collect a database of geotechnical, hydrogeological, and metallurgical data to further evaluate ISR mining conditions present at the deposit. Ten small-diameter test wells were installed within the Midwest Main deposit during the program - including a four-well test pattern and six individual wells to test specific areas of the deposit for various characteristics. The test pattern included one injection well, one extraction well, a recharge well, and a monitoring well outfitted with a multichannel vibrating wire piezometer. The six additional wells were drilled to their target depths and, as applicable, outfitted with well screens and/or pressure monitoring devices to facilitate hydrogeological testing. All wells were decommissioned at the conclusion of the program consistent with regulatory commitments. Cores collected from the test wells within the mineralized zone is also expected to be used to verify and update the current mineral resource estimate for the deposit and support future well field design and mineral processing assessments. The program included completion of various pump, injection, and packer tests designed to assess the permeability of the Midwest Main deposit. The test program measured pressure changes within the mineralized zone, which provides evidence of the deposit’s hydraulic conditions and is indicative of the potential for movement of mining solution in an ISR mining operation. Sufficient permeability within the mineralized zone is key for successful deployment of the ISR mining method. Highlights from the program included the following: j Confirmed Hydraulic Conductivity - Pump and injection tests validated hydraulic connectivity in the test wells within the mineralized zone and achieved hydraulic conductivity values consistent with the study. j Demonstrated the Effectiveness of Permeability Enhancement - One method of permeability enhancement was successfully deployed within two wells, demonstrating the suitability of the method to the Midwest Main deposit. Efficiency of permeability enhancement was verified by comparison of pre- and post-permeability enhancement hydraulic testing. j Metallurgical Samples Defined and Collected for Leaching Characteristics - Core samples representing the Midwest deposit were collected during the program for use in future metallurgical tests to determine the leaching characteristics. David Cates, Denison’s president and chief executive officer commented, “Denison would like to thank Orano Canada for its support and encouragement of our joint efforts to evaluate the Midwest Main deposit for potential future extraction via ISR mining. Orano has significant global expertise in ISR mining and Denison brings industry leadership in the advancement of ISR mining in the Athabasca Basin region - allowing the joint venture to assemble a very strong team to carry out and oversee this inaugural test program. The program achieved its planned objectives, and the results provide preliminary validation that the Midwest Main deposit possesses the characteristics necessary for an ISR operation. Accordingly, further evaluation is warranted and, building on the Concept Study and incorporating the data acquired in the test program, we are proceeding with a Preliminary Economic Assessment (“PEA”) for ISR mining. Midwest represents Denison’s third project evaluated for potential ISR mining in the Athabasca Basin.” MIN
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