Atlas Iron Chairman David Flanaghan said Mrs Edwardes would be an invaluable addition as the company continued to confront challenging market conditions.
Other movements include Northern Minerals chief executive George Bauk joining the board of Lithium project developer Cobre Montana.
Chief Executive of 8M Media and Communications Thomas Murrell being appointed to the board of Walkabout Resources.
Rod Baxter has joined MZI Resources as a non-executive director.
Leopard Resources has appointed Jason Ferris as a non-executive director.
Kiberan Resources has appointed graphite specialist Christoph Frey to help advance the company’s projects.
CSA Global has promoted chief financial officer Tanya Bartram to its board of directors.
Saracen Mineral Holdings has appointed former Papillon Resources managing director Mark Connelly as a non-executive director.
Tony Cormack has taken over the helm of Lamboo Resources following the resignation of former managing director Richard Trevillion.
Alwyn Forster has been appointed as chief executive officer of API Management – the joint venture between Aquila Resources, AMCI and Posco. Prior to joining API Management as general manger last year Mr Forster was managing director of Iron Ore Holdings.
Nathan Tinkler has been appointed an adviser to nickel explorer Rumble Resources.
Fiona Robertson has joined Heron Resources as a non-executive director.
Gippsland Limited has appointed its managing director Michael Rosenstreich as chairman, following the resignation of Ian Gandel from the board.
A1 Consolidated has added Jamie Cullen to its board in the role of non-executive director. Mr Cullen was most recently chief executive of Resource Equipment.
Heron Resources non-executive director Stephen Dennis has been made non-executive chairman following the resignation of Craig Redhead.