When I was at KA, I actually thought it was the hardest ICUS I'd done, albeit my first and probably the steepest learning curve. We would also take due diligence in preparation for flight and dress standards. We turned down flights due weather and certainly operated within limits, we did a manual W+B before each flight (actual weights, not standard). So I think the comment above could be a bit of a cheap shot.
Next time you're on a jet with all big miners on board, and you're close to MTOW, do you REALLY think that each bloke is 86 kg's?? Don't open the overweight takeoff argument, thats why standard weights exist, to circumnavigate that requirement.
Maybe things have changed?? I don't know, I was there many years ago. All the guys who worked there when I was there where great professionals.