Has the mystery of the missing Everest climbers finally been solved? New book claims George Mallory and Andrew Irvine had problems with their oxygen tanks during 1924 mission - and the organisers cove

The Everest climbers who disappeared on a mission 100 years ago had problems with their oxygen tanks, a new book has claimed. George Mallory, 37, and Andrew 'Sandy' Irvine, 22, went missing during their 1924 expedition to climb the world's tallest mountain. Mick Conefrey, in his upcoming book Fallen, George Mallory: the Man, the Myth and the 1924 Everest Tragedy, has claimed that the two mountaineers endured problems with their oxygen tanks during their mission. A new book claims the pair had problems with their oxygen tanks Andrew Comyn Irvine, the British climber, is pictured working on an oxygen bottle in the Everest Expedition camp in 1924 According to Conefrey, the Mount Everest committee spent the modern-day equivalent of £50,000 on oxygen equipment for Mallory and Irvine's expedition. This is an artist's impression of George Leigh Mallory and Andrew Irvine climbing up the Second Step on Everest Irvine and Mallory, are pictured with the other members of the 1924 expedition to Everest When Mallory and Irvine were last seen alive on June 8, 1924 by their climbing teammate Noel Odell, the pair were around 800 feet from the summit of Everest.