https://youtu.be/KHY13PCeSxc?t=46
https://en.wikipedia.org/wiki/Maralinga#Nuclear_tests_and_cl...
They needed to do much better.
It's more about visual markings.
Do you consider those signs to be "communication methods"? They used visual markings.
Didn't realize it. The wikipedia page doesn't seem to cover that and youtube link is broken.
That challenge aside some would say it was a cursory and very much token effort as at that time in history indigenous Australians were considered to be part of the fauna of the unihabited Terra Nullus with no rights other than some use as test subjects for the effects of the new toy.
Probably worth mentioning they also dusted Adelaide with fallout including a young Tony Blair, a future UK Prime Minister.
But very much worse near ground zero.
Re: youtube link - that's just to a 1986 song about the testing from Gossip by Paul Kelly - I dare say it's "broken" due to geo-locking (it works fine here in AU) - https://www.paulkelly.com.au/lyric/maralinga-rainy-land/
Yes, song is likely geo-locked, but youtube just gives vague "video not available". Weird, it's usually more generous on error messages.
So pretty useless overall.