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Oregon United States USA 1929 stock footage and images

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A gun fire triggers off an avalanche and snow is removed with a machine in Alta, Utah.

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.

Date: 1950
Duration: 3 min 10 sec
Sound: Yes
Color: Color
Clip Type: Edited
Language: English
Clip: 65675059575
Different types of avalanches occur as snow drifts down a slope into a valley in Alta, Utah.

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.

Date: 1950
Duration: 2 min 9 sec
Sound: Yes
Color: Color
Clip Type: Edited
Language: English
Clip: 65675059576
A valley affected by a slab avalanche in Alta, Utah.

A training film about the dangers posed by avalanches and the methods to control them in Alta, Utah. An area susceptible to slab avalanches. A fracture of a crack line along an area from where the snow breaks away due to unstable conditions. An area affected by slab avalanche. Blocks of snow along the avalanche path. The valley swept by an avalanche.

Date: 1950
Duration: 55 sec
Sound: Yes
Color: Color
Clip Type: Edited
Language: English
Clip: 65675059577
An artillery shell hits a slope and a slab avalanche is set in motion bringing down enormous snow in Alta, Utah.

A training film about the dangers posed by avalanches and the methods to control them in Alta, Utah. Shallow dry snow avalanche occurs as snow slides down a surface, without causing any harm. An artillery shell hits a mountain slope and a slab avalanche is set into motion. An enormous mass of snow comes down posing a danger for life and property. Another slab avalanche occurs as the entire slope is set in motion.

Date: 1950
Duration: 1 min 49 sec
Sound: Yes
Color: Color
Clip Type: Edited
Language: English
Clip: 65675059578
Means of forecasting avalanches include wind wane, dropping barometer and a gust thermometer.

A training film about the dangers posed by avalanches and the methods to control them in Alta, Utah. An airborne avalanche occurs as snow moves down a dam slide. Some of the snow whirls up with the wind while the rest falls on the ground. Snow moves down as a snow cloud is formed along the slope of Mount Superior. Means of forecasting avalanches include a dropping barometer and a wind wane indicating direction of wind blow. Snow blows from the slope of one mountain to another. A gust thermometer to measure velocity variation of wind. A graph indicates wind speed in miles per hour.

Date: 1950
Duration: 2 min 26 sec
Sound: Yes
Color: Color
Clip Type: Edited
Language: English
Clip: 65675059579
Means of forecasting avalanches include precipitation gauge, settlement gauge and snow stakes.

A training film about the means of forecasting avalanches in Alta, Utah. A special precipitation gauge that collects the horizontal component. A revolving chart in the gauge that records the amount of accumulated snow. Snow stakes being used to record the depth of snow and amount of snow fall. A settlement gauge placed on a snow covered surface and clipped to a resistance wire. A test set of the settlement gauge being used to determine the position of settlement gauge. A thermometer attached to the test set enables to record the temperature as well.

Date: 1950
Duration: 1 min 25 sec
Sound: Yes
Color: Color
Clip Type: Edited
Language: English
Clip: 65675059580