Full face helmets offer superior protection.
In an accident, advice is strongly against removing the helmet.
But a full face helmet makes access difficult for a mask, either for supplementary oxygen, or Entonox.
If helmets were manufactured with a standardized connector to which a medical gas line can be attached, and an internal mask component, rescuers could treat the wearer without risking removing the helmet.-- 8th of 7, Oct 06 2017 If you used a flammable mixture, you could cook the head to perfection. I dont approve of meat eating humans, but there are bears to be fed etc, and this seems like something that someone like 8th of 7 would approve of as an extended usage of the idea.-- xenzag, Oct 06 2017 random, halfbakery