Klondex Announces Initial Mineral Resource Estimate at Hollister; Measured & Indicated of ~217k AuEq oz, Inferred of ~78k AuEq oz

Klondex Mines Ltd.

RENO, NV--(Marketwired - June 21, 2017) - Klondex Mines Ltd. (TSX: KDX) (NYSE MKT: KLDX) ("Klondex" or the "Company") is pleased to announce an initial Mineral Resource Estimate for its Hollister Mine ("Hollister") in Nevada, which incorporated results from drilling performed prior to the Company's acquisition of the property and data generated from additional drilling performed by Klondex subsequent to acquiring the property.