Scary scene. Glad everyone is ok. A thought for others in the future...we sling all day long moving drills on a 120 foot line, with a helmet, shoulder harnesses and the door on (or off), because, we have vertical reference windows in our machines as an industry standard. I have only ever seen 2 in australia, but never been to NZ. They are not that expensive...and dont take long to get proficient.
Really consider it guys...it really is the way to go
Just tightened up my chin strap!