I had a quick look at the charts and the approaches seem to have minimums of 500 to 600 feet with broken 800 reported in the metar. I would not be surprised if they had ground contact during the first approach and were fairly confident they would get in at the next attempt. Weather actually seems to have got worse certainly as far as visibility (in light showers of rain) is concerned during the further hour they spent trying to land, which was probably not what they were expecting in the Pilbara in summer. I suspect very few of us have been in this position given most company´s procedures quite rightly limit the number of missed approaches before diverting. With hindsight I am sure they wish they had made some other choices. But in a just culture self reporting usually limits punitive consequences.