In reply to pass and peak:
Let's not forget, also, that the Pierre a Ric is closed because of heavy vehicles needing access to create a new beginners area on the Grands Montets, as is the track joining the top of the Plan Joran footpath (coming up from the campsite at Chosalets) to the Lognan midstation.
Meaning the only way to acess the Argentiere Refuge is via the Lognan cablecar, which is closed until June 26th, or by taking one of the much more roundabout routes, or going under cover of darkness.
Ho hum.