Probably a few.
There's been plenty of articles over the years in the national papers spruiking the best areas to buy into for rental returns. Mining towns are good, especially when they're in the boom part of their cycle and housing is getting squeezed.
A lot of rental demand in those kinds of regional areas comes from people with a 2 to 5 year plan who don't want to buy to live "forever" in a social backwater. So a lot of investment property owners can then ride through the "bust" part of the cycle on the backs of those people.