PyroGenesis Confirms Successful Site Acceptance Testing MONTREAL, April 25, 2022 (GLOBE NEWSWIRE) -- PyroGenesis Canada Inc. (https://pyrogenesis.com) (TSX: PYR) (NASDAQ: PYR) (FRA: 8PY), a high-tech company (hereinafter referred to as the “Company” or “PyroGenesis”), that designs, develops, manufactures and commercializes advanced plasma processes and sustainable solutions which are geared to reduce greenhouse gases (GHG), is pleased to confirm that, further to Drosrite International LLC’s press release earlier today, the Company’s DROSRITE™ dross recovery technology has been successfully commissioned at Ma’aden Aluminum (the “Smelter” or “End-User”), a joint venture with Alcoa, and one of the world’s largest primary aluminum producers with 2021 revenue in excess of US $7billion.