The 2026 ceuse guide has Chris as the equipper, feel like we'd need a good source to contradict this.
I happened to be there when Chris added some bolts to this (2007), helped with some logistics. My memory is there where some bolts most of the way but is the wrong places and he added a bunch to make it workable. I can check with friend who I was with whom may have a better memory.
Top knowledge! Seems fair to say Arnaud Petit and Chris were both involved in equipping it.