Alexco Discovers New Zone of Silver Mineralization, 3.7 Kilometers Northeast of Bermingham Deposit, Composite Assays to 832 Grams Per Tonne Silver over 7.4 Meters True Width

VANCOUVER, Dec. 4, 2019 /PRNewswire/ – Alexco Resource Corp. (NYSE American: AXU) (TSX: AXU) (“Alexco” or the “Company”) reports final results from the 2019 drilling program at the Keno Hill Silver District property in Canada’s Yukon Territory. Following the successful demonstration of the presence of deeper mineralization adjacent to the existing resource at Bermingham Northeast (see news release dated September 10, 2019, entitled “Alexco Intersects 8.1 Meters (true width) at Composite Grade of 1,414 Grams Per Tonne (45.5 oz/t) Silver at “Bermingham Deep” target”), Alexco embarked on an approximate 3,000 meter (“m”) surface drill program targeting areas with a geological setting interpreted to be similar to that of the high-grade Bermingham deposit. A new discovery at the Inca target returned encouraging results as follows: