I work for a telecommunications company , I am not allowed to mention their name without permission . And the highest I've ever had to climb a pole was 60' at a span over a railway crossing , on hooks .
And when I was younger I worked for RAM Erection (their slogan was happiness is a good erection) . We normally built the mono-rail type crane for Liebherr Cranes . I worked half a day , while waiting for our equipment to show up , erecting one of those cranes for building skyscrapers . We got to the 5th or 6th floor level before we left , which was far enough for me !
I can't imagine climbing that high , I had a hard time watching too !