A documentary about the dangers posed by avalanches and the methods to control them in the mountainous regions of the United States. The Utah National Guard gun crew and forest rangers work on an artillery gun. A gun is fired, a high explosive shell hits at Rustler Mountain of Alta resort. Snow avalanche is triggered and drifts down the slope. The controlled avalanche reduces the chances of an uncontrolled avalanche in the near future. A snow ranger looks through binoculars as he keeps a vigil to check for any avalanches. Men ski along the snow covered slopes.
A training film ' Avalanche Control ' about the dangers posed by avalanches and the methods to control them in Alta, Utah. Men set up a gun and fire it at a snow covered slope. Snow drifts down the slopes as an avalanche occurs. Steep mountains, open slopes and a snow covered area in Alta, Utah. A highway amidst a snow covered area leading to a ski resort. A machine removes snow from the area. An avalanche affected area near a ski resort. Another area with uprooted and displaced electric poles after an avalanche.
A training film about the dangers posed by avalanches and the methods to control them in Alta, Utah. People enjoy skiing in Alta, Utah. A skier comes down a steep slope. Snow flakes fall on a red surface. A man walks on a level snow covered ground. Wind blows away snow. Steep slopes along mountains susceptible to avalanches. Different types of avalanches like the small snow drift. Snow comes down a slope without posing any danger to life and property. Another type of avalanche is flood avalanche where an enormous mass of snow crashes into the valley posing a great threat to life and property.
A training film about the means of forecasting avalanches in Alta, Utah. A snow ranger skis down a test slope in Alta, Utah to detect the actual behavior of the snow cover. Snow drifts down a slope setting in motion a slab avalanche. A ranger test skies along the sides of a slope avoiding the center of the slopes. Snow being dislodged and drifts down due to test skiing. Ranger falls down while skiing.
A training film about the means of forecasting and controlling avalanches in Alta, Utah. A snow covered corner overhanging a ski run in Alta, Utah. A man walks along an area and drills holes in the snow. Another man prepares a charge package and put sticks in each of the holes. Charges placed along the corners detonate and an avalanche occurs. The corner being dislodged as snow slopes down. Skiers watch the avalanche. Various means of checking for avalanches include skiing in case of shallow snow condition. A man throws an explosive to detonate the area and set an avalanche in motion. A projectile fired along the slope to check for avalanche occurrence. The precautions to be taken while setting off an avalanche include checking the slops below for any skiers or vehicles. A man on a cliff looks down at the slope and signals with his hands. Explosion occurs and an avalanche is set in motion. A shell hits a slope and dislodges a major avalanche as it drifts down the slope.
People are seen skiing down the slopes of snow covered mountains in Utah. Then, an avalanche of snow is shown across a valley. It thunders down the mountainside covering trees and everything in its path and rapidly approaches the camera position. Scene shifts to a Snow Ranger of the U.S. Forest Service. View of badges worn by such Rangers. View of the Snow Ranger headquarters in Alta, Utah, where avalanche studies are conducted. Camera pans along a swath of deep snow on a mountainside.