via Fighting Tories
Robert managed this by tagging himself onto an official state visit to the mine and then billing for his overnight stay in Brisbane and travel:
Robert had re-organised his business interests in 2010 according to The Australian:
His register of interests shows his investments are held in a company called Robert Investment House. This in turn is owned by Robert International, which lists his parents — 78-year-old Alan and 75-year-old Dorothy — as directors and shareholders.
At this time Robert and his wife also ceased to be trustees of the Robert Family Trust and the Robert Investments Family Trust according to his statement of registrable interests in 2010, so it is probably safe to assume that he is looking to replace his parents as trustees of these entities as well.
Again, it is hardly likely that someone who appears to consider themselves a professional investor would forget that he owned shares in a mining company in their own home state.