Very interesting call sign, especially suffix. That good boy played it as "k + question mark", i was not sure if the suffix is kiz, kud, k? or another combination.
The sound of drilling (4 approach). Also short sound of start button (after the second approach). At the 3 and 4 approach you can hear hi-frequency whistle, it's a sign what the bit dull.
Recorded at a protest to save anvil hill, on the way to write out human sign that says "save anvil hill" - unfortunately the plans to build more mines has gone ahead.
Recorded onto a minidisc at a protest to save anvil hill in australia from more mining endevours. The sound is of a helicopter flying overhead of the human sign spelling "save anvil hill. ".