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Denison Mines Recovers 14,400 Pounds U3O8 In Wheeler River Feasibility Field Test

Denison Mines (TSX: DML) continues to see success from its in-situ recovery feasibility field test at its Wheeler River uranium
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This article was originally published by The Deep Dive

Denison Mines (TSX: DML) continues to see success from its in-situ recovery feasibility field test at its Wheeler River uranium project. The field test managed to recover 14,400 pounds of U3O8 over a period of ten days, following recovery of a “uranium bearing solution” last month.

Early results from the field test indicate that the leaching area was able to recover uranium with a head grade of up to 43 grams per litre, with those grades still rising at the end of the test cycle, which is indicative of the ramp-up of a well’s production profile.

“Uranium head grades were increasing at the time the leaching phase of the FFT was completed – returning a maximum uranium head grade of 43 g/l. This is over 300% higher than the head grade assumed in the 2018 PFS, and further supports the Company’s decision to increase the assumed ISR mining head grade by 50% for the feasibility study,” said Kevin Himbeault, VP of Plant Operations & Regulatory Affairs for Denison.

The feasibility test reportedly saw suitable acidification for ISR mining within 7 days after the initial injection at 5 metre well spacing, and within 17 days at 10 metre well spacing.

The leaching phase of the feasibility test is now said to be complete, with the phase demonstrating the effectiveness and efficiency of the leaching process using an ore zone 400 metres below surface. Testing was located at the phase 1 planned mining area of the Phoenix deposit, with the test wells used suitable for commercial-scale operations.

“The detailed results from the leaching phase of the Phoenix ISR FFT are very encouraging. Using only one injection well and two recovery wells for a period of active leaching of only ten days, we recovered an estimated 14,400 lbs U3O8 – representing approximately 1% of the mineral reserves estimated to be within the perimeter of the FFT test area,” commented CEO David Cates.

The Phase 1 area of the deposit is estimated to contain 22.2 million pounds of U3O8 in probable mineral reserves, of which 6.6 million pounds is estimated to be contained within the operating perimeter of the five well test area.

Activities under the field test have now moved to the neutralization phase, and the company is expected to begin the third and final phase, the management of the recovered solution, in spring 2023.

Denison Mines last traded at $1.57 on the TSX.


Information for this briefing was found via Sedar and the companies mentioned. The author has no securities or affiliations related to this organization. Not a recommendation to buy or sell. Always do additional research and consult a professional before purchasing a security. The author holds no licenses.

The post Denison Mines Recovers 14,400 Pounds U3O8 In Wheeler River Feasibility Field Test appeared first on the deep dive.


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