You'll also need a satellite phone, a two-way radio and some foot powder.
Essential equipment: Oxygen canisters: five to seven 3l bottles; a sack to collect ice and snow, for melting; and wet wipes for washing your body. These freeze, so you need to sleep with them inside your tent if they're going to be of any use. You'll also need a satellite phone, a two-way radio and some foot powder.