Brock and I wore crampons strapped to our mountaineering boots, wool underwear under polyester pants, harnesses with an ice screw
and carabiners, ice axe, ski pole, and gloves.
Two ice screw
anchors failed, resulting in a fall of about 100 feet.
In 1961, he drove to the Caucasus mountains in a Mini, got frostbite, nearly lost another member of the party and had to abseil down an ice-fall held on by an ice screw
on an overhanging ridge.
Touchdown was planned to take place at a speed of around 1 m/s, with the three-legged landing gear absorbing the impact to prevent rebound, and an ice screw
in each foot driving into the surface.
"I remember thinking to myself there is no way the ice screw
was going to hold this fall," says Salesse.
The thread is drilled using a mountaineer's titanium ice screw
with diamond-sharp points.
It came down the gulley I was in and knocked me 35 metres but an ice screw
stopped me from sliding down any further.
The ice screw
held but I went swinging round and hit a ledge injuring my left leg.
Swinging my tools into the ice and standing on the front points of my crampons, I gain height and place an ice screw
into the ice.
A lot of them will ask how an ice axe and an ice screw
can possibly support your entire weight while it's just being held on ice.
Lucky John Hunston, 44, was saved only by a rope and an ice screw
when he plunged 200ft from the summit of Ben Nevis.