The Canadian former assistant deputy minister for transport will formally join the board in the second half of the year.
She will replace long-time director Paul Tellier, who plans to step down in May.
Whitehaven Coal has appointed Heron Resources director Fiona Robertson to its board, replacing Christine McLoughlin, who has retired.
Peter Love has resigned as chairman and director of Intrepid Mines.
Richard Baumfield will be appointed as chairman at the next board meeting.
Castillo Copper has appointed Peter Meagher as chairman, replacing David Wheeler who has stepped down to focus on other business interests.