Dec 16 (Reuters) - Royal Dutch Shell PLC RDSa.L :
* SHELL CANADA - PRESIDENT MICHAEL CROTHERS TO RETIRE IN 2021; CROTHERS WILL BE SUCCEEDED BY SUSANNAH PIERCE
Dec 16 (Reuters) - Royal Dutch Shell PLC RDSa.L :
* SHELL CANADA - PRESIDENT MICHAEL CROTHERS TO RETIRE IN 2021; CROTHERS WILL BE SUCCEEDED BY SUSANNAH PIERCE