They get paid pretty well according to this research - better if they’re with a group or corporate than by themselves (see page 13): https://www.ava.com.au/sites/default/files/AVA_website/pdf/AVA-Workforce-Survey-2016-Final.pdf
I88 Infini soars 50% as company reveals it could’ve just made uranium history – redefining what it means to be “high grade”