WA's United joins forces with big rival; Opes probes widens to share price manipulation; BHP shares soar on China buy rumours; Stokes cool as WAN goes on foot with profit; Merger growth for Gemini

WA's United joins forces with big rival; Opes probes widens to share price manipulation; BHP shares soar on China buy rumours; Stokes cool as WAN goes on foot with profit; Merger growth for Gemini