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Alta Utah USA 1950 stock footage and images

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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.

Location: Alta Utah USA
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.

Location: Alta Utah USA
Date: 1950
Duration: 1 min 49 sec
Sound: Yes
Color: Color
Clip Type: Edited
Language: English
Clip: 65675059578
Snow cover behavior and stability being observed and recorded with the help of instruments in Alta, Utah.

A training film about the means of forecasting avalanches in Alta, Utah. A Ram Penetrometer being used by a ranger to observe and study the behavior of snow cover. It measures the hardness of snow. A ranger digs a pit alongside the penetrometer with a shovel. Snow temperature being recorded with the help of a dial thermometer in the dugout. Layering of snow being recorded by the ranger to detect an avalanche. About half meter long sample tubes being inserted in different layers of snow. Sample tubes being removed and weighed to determine the water content and stability. Similar tests being conducted along a fracture line. A ranger with a penetrometer at the fracture line. Snow layers being observed and recorded at the fracture line. Ram resistance and slope angles being measured and recorded at the fracture point to make a profile of the fracture line.

Location: Alta Utah USA
Date: 1950
Duration: 3 min 40 sec
Sound: Yes
Color: Color
Clip Type: Edited
Language: English
Clip: 65675059581
Test skiing, explosives and avalauncher being used to detect the occurrence of an avalanche in Alta, Utah.

A training film about the means of forecasting avalanches in Alta, Utah. A snow ranger skies down a slope during testing. Incorrect and correct or safer ways of test skiing demonstrated. Explosives being used to set an avalanche in motion. Cables attached and a charge package of TNT (Trinitrotoluene) prepared. Fuse lit up with an igniter. A man throws the charge and explosion results in a crater indicating the least possibility of occurrence of an avalanche. Another man throws a charge and results in slab avalanche as snow breaks up in blocks. An electric cap being used to control time of detonation of explosive. A man throws the charge and a slab avalanche occurs as a result of a slide set on motion by the explosion. A man works on a projectile called avalauncher. Men work on the projectile and fire it at a slope.

Location: Alta Utah USA
Date: 1950
Duration: 6 min 39 sec
Sound: Yes
Color: Color
Clip Type: Edited
Language: English
Clip: 65675059583
Military weapons like 81 mm mortar and 75 mm Howitzer being used to set off avalanches in Alta, Utah.

A training film about the means of forecasting and controlling avalanches in Alta, Utah. A 81 mm mortar being used to set off an avalanche. Men work on the mortar. A 75 mm Mountain Howitzer being worked on for setting off an avalanche. Men load a shell into the Howitzer and fire. A slab avalanche is set off as snow drifts down a slope. A dust cloud is formed.

Location: Alta Utah USA
Date: 1950
Duration: 1 min 19 sec
Sound: Yes
Color: Color
Clip Type: Edited
Language: English
Clip: 65675059584
Military weapons like 105mm Recoilless Rifle and a 75mm Howitzer being used to set off avalanches in Alta, Utah.

A training film about the means of forecasting and controlling avalanches in Alta, Utah. A 75 mm Mountain Howitzer fired from a highway. It does not result in an avalanche. A 105 mm Recoilless Rifle being fired at a slope, which does not result in an avalanche. Backlash of the rifle results in two avalanches down a slope.

Location: Alta Utah USA
Date: 1950
Duration: 1 min 1 sec
Sound: Yes
Color: Color
Clip Type: Edited
Language: English
Clip: 65675059585
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