C1N1C · Today 14:27
That's why they are using nitrogen. Believe it or not, it IS painless and absolutely as cheap as chips. I'd opt for that any day.
It's the method of delivery which is the problem here. I work in an industry, where safety is promoted heavily and we were once shown a video of a terrible series of deaths, where a group of workers were supposed to clean a petrochemical tank, which had been flushed with nitrogen.
It was filmed as an instructional video. Unfortunately, the nitrogen hadn't been flushed, on guy put his head into the aperture and passed out, falling in. Another went to grab him and the same happened to him, then the next guy tried to grab the second and passed out, but was rescued - he recovered.
Immersion into pure nitrogen apparently causes instant unconsciousness. Pumping it through a mask doesn't.
And no, I'm not pro death penalty, but if they continue to use it, it should at least be quick and humane.