Men are taught different safety measure like how to tie a square knot and a granny knot while working in mines in the U.S.
United States USA Date:1921 Duration:2 min 40 sec Sound:NO SOUND
A documentary titled 'Safety in the Mine' depicts the safety measures to be taken by the workers in mines in the United States. Men practice artificial respiration on pretend "victims" to resuscitate them after suffocation in a mine. A man opens and displays first aid packages. A man demonstrates how to tie a square knot and a granny knot.
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