Interesting that the circular states:
As part of this effort, assistance was provided by the RFDS and other organisations involved in servicing remote communities, with some success.
And yet Broken Hill is listed as one of the problem facilities. That the RFDS with a large base of operations there cannot provide details of the operator of the BHI aerodrome (or the operator refuses to provide details to AirServices) is interesting.
Makes me think in many cases operators are not responding to requests rather than not being able to be identified. Which is still very concerning.