Nov 23 (Reuters) - Cimic Group Ltd CIM.AX -
* CIM's Thiess awarded contract expansion & extension at Melak
* Thiess has secured a contract expansion and extension at Bayan Resources Group's Melak coal mine
* Contract extension until March 2022 with additional revenues of A$530 million Source text for Eikon: ID:nASX7LPbhf Further company coverage: CIM.AX