11 April 2012: Private Jaco van Gass tries out his prosthetic ice axe for the first time, while testing equipment before his team begin their climb of Mount Everest. Private van Gass, who lost his left arm in a rocket blast in Afghanistan in 2009, put his own invention through its paces, and realised it needs some minor adjustments.Picture: David Cheskin/PA

Credit : David Cheskin/PA