There was a second Swiss expedition in autumn 1952, but a party including Lambert and Tenzing was forced to turn back at a slightly lower point.
With this group, Lambert tested his skills against French, German and Italian rivals to become the first ascenders of the hardest new climbs in the Mont Blanc Range.
Caught in a violent February storm, the climbing party found themselves stranded on the summit of Mont Blanc du Tacul.
Building on Shipton's experience, the Genevans reached the head of the Western Cwm and climbed the huge face above to the desolate, wind-swept plateau of the South Col. Three Swiss climbers and Sherpa Tenzing Norgay continued towards the summit, pitching a tent at 8,400m.
Despite the best plans, Tenzing and Lambert now had to spend a night at 8,400m with no sleeping bags and no stove, producing a trickle of drinking water by melting snow over a candle.
They struggled heroically, at times crawling on all fours, hindered by the dead weight of malfunctioning oxygen sets, finally grinding to a halt near 8595m, approximately 250m short of the summit.
This time he and Tenzing were driven back from the South Col by the November jet stream winds and, to the immense relief of the British team, preparing for 1953, the Swiss admitted defeat.
However, Raymond told me tactfully, `Monsieur Colonel, vous aurez gros problemes', meaning, I think, that we hadn't a hope in hell."