Accident Prevention Through Equipment Guarding. Guards, in this case, are not human, but refer to guard rails and metal cages used to prevent machines from killing or maiming their operators. This 1982 industrial safety film for miners teaches us the importance of guards and generally how to keep yourself safe around machines that could easily remover a finger or a limb or two if operated carelessly. It's mostly pretty dry, but it’s punctuated by staged accidents that are announced by dramatic music on the soundtrack. Oh no! There goes another one! Fortunately, the blood is kept to a minimum.Ratings: Camp/Humor Value: ***. Weirdness: ***. Historical Interest: ***. Overall Rating: ****.