The microscopic studies of snow and the causes of the occurrence of the avalanches in the United States.
United States USA Date:1943 Duration:2 min 46 sec Sound:Yes
A film depicts the causes of avalanches. Mountainous region in the United States. Snow covered mountains. An avalanche in progress, as seen from a safe position to the side. Group of skiers on the mountains ski downhill. The microscopic studies of snow. A man looking at the snow crystals under a microscope. A diagrammatic representation of the snow crystals. The causes of the occurrence of the avalanches are explained.
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