My nephew is a fifo sparky for some mines, his base is 200K AUD, I don't know how much he makes in allowances on top. He's on call 24 hours though and just has to fly somewhere at a moments notice.
Typically, the workers fly out from a capital city to work/live at a remote mine site for several weeks, then they fly back for a couple of weeks rest, repeat.
Fly in fly out. It's common in Australia for mining and oil & gas workers to live in a capital city but fly into the work site. Their roster might be a week on followed by a week off or similar.