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NexGen Energy Ltd.

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Summary

Project:

Rook I

Deposit:A2
Location:Canada
Commodities:Uranium
Date:2/14/2019
Report Code:NI43-101
Report Type:Exploration/Drilling Update
Project Stage:Pursuing Feasibility Study
Report details:14-2-2019: NexGen Energy Ltd. announces an Exploration/Drilling Update report for its A2 deposit at the Rook I project. Drilling results incl. 32.5m @ 6.65% U3O8 from 574.5m. Vancouver, BC, February 14, 2019 – NexGen Energy Ltd. (“NexGen” or th
Resources:(not mentioned in this report)
CP/QP:[Overall Report]: n/a (n/a)
ABSTRACT:Vancouver, BC, February 14, 2019 – NexGen Energy Ltd. (“NexGen” or the “Company”) (TSX:NXE, NYSE MKT:NXE) is pleased to report geotechnical results for the initial shaft pilot holes and assays for all twenty‐nine holes comprising 20,482.31 m, drilled during the summer development program on the Company’s 100% owned Rook I property, in the Athabasca Basin, Saskatchewan. Highlights: Shaft Pilot Hole Report NexGen Energy Ltd. retained SRK Consulting Canada Inc. to complete a geotechnical, hydrogeological, and thermal characterization to confirm the selection of a suitable location for the proposed shaft and facilitate a Feasibility Study (“FS”) level technical assessment related to the shaft pilot hole program. Additionally, DGI Geoscience Inc. completed a down‐hole geophysics program to collect continuous data, in electronic format, of: sonic velocity, density, normal resistivity, natural gamma, spontaneous potential, mechanical caliper, and acoustic and optical scans of the borehole walls. Three shaft pilot holes were successfully completed to a depth between 650 m and 702 m. The vertically drilled shaft pilot holes were kept within a 6.0 m diameter cylinder from surface through to their termination depths, intersected minimal structure and showed low hydraulic conductivity throughout via packer testing at regular intervals. The shaft pilot hole geotechnical and hydrogeological conditions compiled in the Rook I Arrow Deposit Pilot Characterization Report will facilitate FS level engineering and design of two vertical shafts at the Arrow Deposit; one for exhaust air and one for production and fresh air.

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