Our safety director came down to check things out this week and made mention of the holes in the vented petzl helmets. He said that they're not safe since they're not dielectric tested or however you spell it. Would you get dissappointed with your crews if they had such helmets? It's like I'm an intern for the summer and I paid for the helmet with my pennies and he tried to tell me that it wasn't safe. I don't really plan on working that close to heavy power lines anyways. I just can't believe he had an issue with this.