PyroGenesis Increases Ownership in HPQ Silicon Resources Inc. to 9.6%
MONTREAL, Aug. 13, 2018 (GLOBE NEWSWIRE) -- PyroGenesis Canada Inc. (http://pyrogenesis.com) (TSX-V:PYR), a TSX Venture 50® high-tech company, (the "Company", the “Corporation” or "PyroGenesis") a Company that designs, develops and …