When the HRC method is used the arc flash warning label is to include the highest hazard/risk category (HRC) for the equipment. Items 130.5(C)(1)a through c do not apply. They are only applicable when the incident energy (calculation) method is used.
Wool s natural ability to absorb and transmit water vapor is of unique importance in maintaining Thermophysiological Comfort, a state in which the individual is free from thermal strain. The Humanitarian Blanket provides the necessary requirements for emergency and humanitarian relief situations.
I remember with fondness one of the first science experiments I did in school, measuring how quickly beakers of hot water cool down when wrapped in different materials, and cotton wool was the best insulator we tested. The fibres of the cotton wool trap pockets of air, and air is a good insulator.