PARIS: LafargeHolcim announced that its Holcim Participations (US) Inc. subsidiary has successfully completed the acquisition of Firestone Building Products, following all regulatory approvals. The transaction closed earlier than expected due to smooth collaboration with Bridgestone and all 1,900 employees will be joining LafargeHolcim. Jan Jenisch, LafargeHolcim CEO: “I warmly welcome the Firestone Building Products team…