OK so 70 views and no response, ( hope this is not just a crafty advert - if it is it worked as i had to look up the Milan systen) not an area I work in that often but for me there are a couple of questions that might help people offer help.

As I understand the Milan system its designed to allow the IP to be lifted, to relieve the pressure to release the fall arrest system, it then acts as a an inertia reel to lower both IP and rescuer to ground.

It sounds as if you are already climbing with an inertia real system fixed – so what situation are you considering? Is it that your colleague falls and nocks himself out they could become wedged in the ladder in some way?  If a rescuer could “un wedge” them would the inertia reel system then work? (Obviously would need to talk to the manufacture)

I can see one possible scenario that would be problematic, where a leg mag get stuck through the ladder leaving the IP hung head down. This would be difficult to release from below – is that your potential problem.

Hello,

Without seeing any pictures it's really difficult to comment. Is it completely impossible for the potential rescuer to get past any casualty? What about the rescuer maintaining their own fall arrest whilst climbing through the cage or opposite side of the ladder? Again, hard to tell without seeing.

There's rope access techniques that can be utilised, (Petzl ID at ground level, run through a pulley overhead etc), but that's getting quite complex for a simple ladder with cage.