Dec 8 (Reuters) - Rio Tinto (LON:RIO) Ltd RIO.AX :
* Rio tinto bolsters executive committee-rio.ax
* Vera Kirikova will assume role of human resources group executive and Simone Niven role of corporate relations group executive on 1 January 2017
* Organisational resources group executive Hugo Bague will leave company on 31 March 2017 after supporting a transition Source text for Eikon: ID:nASX43VwBy Further company coverage: RIO.AX