Item showing how the Canadian Mines Department check ropes for safety.
Titles read: "A BIG PULL - Lots of people are said to get on with the aid of a 'pull' - but here's one of the biggest pulls of all - as practised by the Canadian Mines Department."
M/S of man examine the steel prongs of a three inch rope. Several shots of the rope being tested for strength. C/Us of the the strands snapping due to extreme weight.