Brief: Argo Blockchain Appoints Justin Nolan As CEO
March 24 (Reuters) - Argo Blockchain PLC ARB.L: ARGO BLOCKCHAIN PLC - APPOINTMENT OF CHIEF EXECUTIVE OFFICER ARGO BLOCKCHAIN PLC - APPOINTS JUSTIN NOLAN AS CEO Source text: ID:nRSX8350Ba Further company coverage: ARB.L ((Reuters.Briefs@thomsonreuters.com;))