Phoenix Feasibility Study 2023
Phoenix ISR De-Risking:
Combining the world's lowest cost uranium mining method with
one of the world's highest-grade undeveloped uranium deposits
Lenison
2019/2020
ISR Field Tests (1)
35 small-diameter test,
observation and re-
charge wells
2 large-diameter
commercial scale wells
Pump and injection
tests collecting critical
hydrogeological data
Demonstrated "Proof of
Concept" for use of ISR
Specialized Core
Leach Testing
Leach testing indicative
of in-situ conditions
using intact core
samples from Phoenix
Results consistently
produced uranium
bearing solution head-
grade levels significantly
higher than grade used
in the 2018 PFS(2)
+97% recovery achieved
during long-term test(5)
CAN BE
SC999
Additional High-
Grade uranium
discovered at
Phoenix(3)
22.0% eU308
over 8.6 metres in GWR-045
Located outside of the
existing high-grade
resource domain for
Zone A and Phase 1 of
the current mining plan
2021 field test of
commercial-scale
ISR test pattern(4)
Achieved commercial-
scale flow-rate used in
the 2018 PFS
Completed Athabasca
Basin's first "tracer test"
showing hydraulic
control, breakthrough
times consistent with
modelling, and ability to
carry out "clean-up"
PHOTOS (Left to Right):
Small diameter ISR test
wells installed at Phoenix
in 2019; Specialized core-
leach testing apparatus
from the Saskatchewan
Research Council (SRC);
high-grade uranium core
and scintillometer;
monitoring of commercial
scale ISR test wells at
Phoenix in 2021.
LINKS:
2021 Phoenix ISR Test
Program on Vimeo
NOTES:
(1) See Denison's news
releases dated December
18, 2019, February 24,
2020, and June 4, 2020.
(2) See Denison's news
releases dated February
19, 2020, and August 4,
2021.
(3) See Denison's news
release dated July 29,
2021.
(4) See Denison's news
release dated October 28,
2021.
(5) See Denison's news
release dated December
8, 2022.
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