The work here is awesome, safe ,well planned. Truly no safer way to remove a standing tree in an urban setting than by the use of a properly sized crane and a well qualified climber. Judging the actual dynamic weight of the load (log) is not an easy task as numerous variables come into play.
Again, good job….be safe.
Roger Clyde Webb demonstrates Wood-turning 2000-year-old wood, Huon pine ( Lagarostrobos