Pah lightweights what about a 8 hour working day excavating contaminated soil wearing the old Soviet rubber kit at 30Â°+ (internal temp of the suits was measured at 50Â°C+) the only way we could manage it was having a firehose permantly spraying the area and all working in it.
What possible advantage can ther be to having a 'hollowed out' canister? There's no saving in weight, and if your canister is okay there's no real ease in breathing. There is however, as this idiot found out, a disadvantage. Good for the others moral though.
It was fantastic for our morale. The tw@ concerned had benn banging on about how clever he was for ages. It does make a difference, especially if - like him - you have extra air holes on the rear part of the can, where the DS can't see them. When they pumped that CS into his basha I felt that there was justice in the world.