There are a whole lot of tower cranes near my workplace lately, including one that had a climbing frame. I never got to see the climbing frame in operation, so I had to poke around on the web and at my local library to get an explanation. One of the first hits I got was a story of a horrible crane accident involving a malfunctioning climbing frame operated by an unqualified crew. I’m glad nothing similar happened to the 500-foot crane I used to walk past twice a week.