60. Protection of legs: Kneepads worn for felling, hauling and bucking with a power saw or for other work requiring the use of a power saw shall conform to the following conditions:(a) be of the appropriate size and protect the knee and the leg to the height of the safety footwear; and
(b) be of material that is resistant to cuts for a period equal to or greater than 4 seconds when the material is cut with an electric chain saw operating at a speed of 14,180 teeth/minute.