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IsoEnergy Ltd
Symbol C : ISO
Shares Issued 46,060,548
Close 2017-12-18 C$ 0.46
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IsoEnergy survey finds drill targets at Thorburn

2017-12-19 06:51 ET - News Release

Mr. Craig Parry reports

ISOENERGY IDENTIFIES ADDITIONAL URANIUM DRILL TARGETS AT THORBURN LAKE

IsoEnergy Ltd. has completed a program of ground geophysical surveying at its Thorburn Lake uranium property in the eastern Athabasca basin of Saskatchewan. Compilation and interpretation of the direct current resistivity geophysical data with previous surveys have resulted in the recognition of additional high-priority drill targets on the property.

Steve Blower, vice-president of exploration, commented, "The survey has successfully located new, high-priority drill targets on the unexplored western half of Thorburn Lake that add to an already strong inventory on the property."

Thorburn Lake

Thorburn Lake consists of two claims totalling 2,802 hectares and is located seven kilometres east of Cameco Corp.'s Cigar Lake uranium mine. An image on the company's website shows the location of Thorburn Lake relative to the Cigar Lake mine, other uranium occurrences, and key infrastructure in the area including a power line and the Cigar Lake to McClean Lake ore haul road which both traverse the western half of the property.

Despite the presence of several high-grade uranium mines and occurrences in the immediate area, only limited exploration has been completed on the property to date, most of which has focused on following up weak mineralization drilled in 2008 and 2011 along the eastern end of the southern property boundary. This mineralization includes 0.43 per cent triuranium octoxide over 0.6 metre in 2011 drill hole TBN-11-05a. Depth to the sub-Athabasca unconformity at Thorburn Lake ranges from 290 to 350 metres.

The survey

A program of 49.5 line kilometres of DC-resistivity geophysics on grid lines spaced 200 metres apart is now complete. An image the company's website shows the area that was surveyed, constituting a large portion of the western half of Thorburn Lake. The program extended geophysical coverage to the southwest of the area surveyed in 2016 and was designed to initiate exploration on the western half of the property and add drilling targets to the company's Thorburn Lake inventory for potential evaluation by drilling.

The entire western half of Thorburn Lake is essentially unexplored, due in part to the presence of a 138-kilovolt power line that supplies power to the entire Eastern Athabasca region. The power line effectively masks a large area of the property from electromagnetic geophysical surveying, a common tool for locating drill targets in the Athabasca basin. DC-resistivity surveying, however, is much less affected by power line noise and is at least equally capable of locating drill targets.

Compilation and interpretation of the data with prior geophysical surveys have resulted in the recognition of target areas that warrant evaluation by drilling. The target areas are discrete resistivity low anomalies in the basement that coincide with magnetic lineaments. These features may represent areas of hydrothermal alteration along major structures that could be related to basement-hosted uranium mineralization.

All of the Thorburn Lake target areas have been scored and ranked against all other IsoEnergy drill targets and will be evaluated in due course as priorities, market conditions and budgets permit, possibly as early as the second half of 2018.

Qualified person statement

The scientific and technical information contained in this news release was prepared by Steve Blower, PGeo, IsoEnergy's vice-president, exploration, who is a qualified person (as defined in National Instrument 43-101 -- Standards of Disclosure for Mineral Projects). Mr. Blower has verified the data disclosed. This news release refers to properties other than those in which the company has an interest. Mineralization on those other properties is not necessarily indicative of mineralization on the company's properties.

About IsoEnergy Ltd.

IsoEnergy is a well-financed uranium exploration and development company with a portfolio of prospective projects in the eastern Athabasca basin in Saskatchewan, Canada, and a historic inferred mineral resource estimate at the Mountain Lake uranium deposit in Nunavut. IsoEnergy is led by a board and management team with a record of success in uranium exploration, development and operations. The company was founded and is supported by the team at its major shareholder, NexGen Energy Ltd.

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