PyroGenesis Announces That Lab Strength Tests Achieve 45% Above Target for Green Cement Additive Product MONTREAL, April 11, 2024 (GLOBE NEWSWIRE) -- PyroGenesis Canada Inc. (http://pyrogenesis.com) (TSX: PYR) (OTCQX: PYRGF) (FRA: 8PY), a high-tech company (the “Company” or “PyroGenesis”) that designs,...