IsoEnergy Ltd. announced the final assay results from its successful summer 2021 drilling at the Hurricane zone. Hurricane is a high-grade uranium zone located on the Company's 100% owned Larocque East property (the "Property") in the Eastern Athabasca Basin of Saskatchewan. 6.5m averaging 20.4% U3O8 in southern expansion drill hole LE21-107, including 3.5m averaging 34.5% U3O8 7.5m averaging 4.5% U3O8 in southern expansion drill hole LE21-87A Mineralization in drill hole LE21-101 of 0.5m at 3.1% U3O8 confirms continued expansion potential LE21-107 targeted the centre of a 26m gap between previously reported drill holes LE20-71 (2.4% U3O8 over 2.0m) and LE21-82 (4.5m averaging 0.9% U3O8 including 1.0m 1.4% U3O8).

LE21-107 intersected 6.5m averaging 20.4% U3O8 from 325.5 to 332.0m, including 3.5m averaging 34.5% U3O8 from 327.5 to 331.0m. Figures 2 and 3 show the location of the drill hole in plan and section view, respectively. LE21-87A intersected 7.5m of uranium mineralization from 331.0 to 338.5m averaging 4.5% U3O8 including 2.0m averaging 9.2% U3O8 from 336.0m to 338.0m and including 1.0m averaging 8.1% U3O8 from 334.0m to 335.0m.

LE21-87A expanded the Hurricane zone 17m south of drill hole LE21-78C1 (12.0m averaging 5.2% U3O8 including 2.0m averaging 27.6% U3O8), increasing width of the mineralized footprint to at least 86m on section 4460E. Figures 2 and 4 show the location of the drill hole in plan and section view, respectively. Drill hole LE21-103 targeted the unconformity 31m south of previously reported drill hole LE21-82.

LE21-103 intersected 4.0m of uranium mineralization from 334.5m to 338.5m averaging 0.9% U3O8 which includes 0.5m averaging 4.7% U3O8 from 337.5 to 338.0m. LE21-103 expanded the Hurricane zone 31m to the south and the mineralized footprint is now at least 125m wide on section 4485E. Figures 2 and 3 show the drill hole in plan and section view, respectively.

Drill hole LE21-91 was completed to test for easterly extensions of mineralization intersected by earlier 2021 drill holes and targeted the unconformity 28m northeast of LE21-82 and 47m east of LE21-78C1. LE21-91 intersected 5.0m averaging 0.7% U3O8 from 336.0m to 341.0m. Figures 2 and 5 show the drill hole location in plan and section view, respectively.

Drill hole LE21-105 was completed to test for easterly extensions of mineralization intersected by LE21-91. LE21-105 reached the unconformity 21m east of LE21-91 at a depth of 341.5m, intersecting 0.5m averaging 0.1% U3O8 from 339.5 to 340.0m. Figure 2 shows the drill hole in plan view.

Drill hole LE21-101 tested the prospective graphitic structural corridor bounded by the J- and L-Faults in an area that has seen limited drilling. The drill hole intersected 4.5m of uranium mineralization from 324.5 to 329.0m averaging 0.6% U3O8 including 0.5m averaging 3.1% U3O8 from 327.5 to 328.0m. Figures 2 and 6 show the drill hole in plan and section view, respectively.

Drill hole LE21-85 was drilled to follow up mineralization intersected by previously reported drill holes LE20-57 (11.7% U3O8 over 10.0m) and LE20-38 (2.0% U3O8 over 7.5m). The drill hole intersected an upper zone of uranium averaging 0.2% U3O8 over 1.0m from 321.5m to 322.5m above a lower zone averaging 0.2% U3O8 over 0.5m 327.0m to 327.5m. Figures 2 and 4 show the location of the drill hole in plan and section view, respectively.

LE21-93 was drilled to expand mineralization to the north on section 4410E and targeted the unconformity 29m north of previously reported drill hole LE20-42 (0.4% U3O8 over 3.0m). The drill hole intersected 0.1% U3O8 over 0.5m beginning at 316.0m, 13m above the unconformity. The zone of significant mineralization is interpreted to be closed off to the north on section 4435E.

Figure 2 shows the location of drill hole LE21-93 in plan view. The 100% owned Larocque East property consists of 33 mineral claims totaling 16,780ha. Two of the project's claims distal to the Hurricane zone are subject to a 2% Net Smelter Returns Royalty of which 1% may be bought back for $1 million at IsoEnergy's discretion.

Larocque East is immediately adjacent to the north end of IsoEnergy's Geiger property and is 35km northwest of Orano Canada'sMcClean Lake uranium mine and mill.