The ACTING DEPUTY PRESIDENT (Senator Cameron): The President has received letters from a party leader seeking variations to the membership of committees. Senator FEENEY: I move: That senators be discharged from and appointed to committees as follows: Economics References Committee— Appointed— Substitute member: Senator Colbeck to replace Senator Williams for the committee’s inquiry into the impacts of supermarket price decisions on the dairy industry on 6 October 2011 Participating member: Senator Williams Public Works—Joint Statutory Committee— Appointed—Senator Boyce. Question agreed to.