mori, many mines in aus do. that is the only way to get staff in and out in a timely manner.
flew here a few times. world's biggest producer of industrial and pink diamonds, owned by rio tinto.
-16.633975° 128.451056° (google earth)
That last one is a swimming pool waiting to happen.
One of the old open cast coal mines behind our town has been turned into a lake....it's very close to town,just behind the last row of houses.A barge is moored in the middle,and they do commercial diver training there - deep sea diving just a few metres from shore.I had the kayak out on the lake at Easter.