Denison delivers robust PEA for Waterbury Lake

The THT ISR operation is estimated to produce total mine production of 9.7-million pounds U₃O₈ over an approximate six-year mine-life with final processing occurring at the McClean Lake mill. The project has an average cash operating cost of $12.23 per lb and an all-in cost of $24.93 per lb. Initial capital costs are estimated to be US$112-million.

The company announced last week that is ready to resume the formal environmental assessment (EA) process for the Wheeler River project, poised to be Canada’s first in-situ recovery uranium mine.

Denison had paused the process in March, due to restrictions related to Covid-19 measures. 

“The Waterbury PEA further demonstrates the potential for the ISR mining method to change Canada’s global competitiveness in the uranium mining sector – without requiring the discovery and development of massive-scale uranium mines,” said Denison president and CEO David Cates.

“The selection of the ISR mining method for the Tthe Heldeth Túé deposit has transformed our expectations for the project – generating robust preliminary financial results with comparatively modest upfront capital costs.”

Denison’s plan for the project includes a ‘freeze wall’ design adapted from the ‘freeze dome’ outlined for the Phoenix deposit in the Wheeler River Pre-Feasibility Study.

“The freeze wall design allows for the containment of a smaller area and a significant reduction in up front capital costs, as compared to the ‘freeze dome.” said David Bronkhorst, VP operations of Denison.