Klondex Provides Mineral Reserve and Project Updates at True North; Total Mineral Reserves Increased by ~25% to ~148k Au oz

VANCOUVER, BC--(Marketwired - May 12, 2017) - Klondex Mines Ltd. (TSX: KDX) (NYSE MKT: KLDX) ("Klondex" or the "Company") is pleased to provide an updated Mineral Reserve estimate and an update on infrastructure improvement activities for the True North Gold Mine ("True North") in Manitoba, Canada.