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/ cyrilbailly.elagage Sanitary pruning of a Chestnut tree aged between 350 and 400 years located in a private park The subject has never been pruned Removal of dead wood and some dead carpenters Climbing time: 3 hours Total time: 5.5 hours for 1 person Use of the SRT rappel (fixed rope) with the Bulldog Bones mechanical system Use of the BOLA lanyard blocker for possible use in SRT