Gday,
Moons ago I flew regularly into Moomba Gas Field in central Aus. They had the normal gas flare on the plant there and I vaguely remember a .7nm radius and min 2000' altitude restriction around the site.
As I say, too long ago to be sure of the data. But rest assured nobody wanted to test the claimed min safe alt. above the thing and we all stay well clear
Milt, if you can access the IAL plates for Moomba I'm sure it will still be marked on the chart. Maybe someone at Airservices can tell you who gave them the data??
Cheers,
Con