Also, isn't Rio Tinto trialing driverless trucks in one of their open cut mines right now? The news report showed and described footage of trucks which will all be driverless and controlled remotely within 5 odd years!
One would hope the union guys are onto this already.
Quite a few mines have been. All "new" mine sites in Australia will be driverless. Currently operating minesites cannot replace mining truck drivers with computers. From what i have been told, the mining companies have set up a complex in Orange (NSW) where they will be controlling mining trucks all over Australia and Asia.
But with aircraft, at least the A320 neo, A350, 737x is going to be flown by pilots, so hopefully there will be jobs available until 2040.