there was a guy a couple of years ago that got bit by a juvenile black mamba on the finger while doing some kind of park guide course in south africa and they were learning about them. Waved his hands around or something and it just went for them. Stupidly they thought it was a dry bite and they actually just carried on with the lecturelatshki;4104620; said:generally you will have time unless you live more then an hour away from one but if that is the case then you should re think keeping them
shortest anyone had ever reportedly died from a snake bite was 20 minutes but it was to the chest or jugular in which the venom got to the heart in seconds

http://www.timesonline.co.uk/tol/news/world/africa/article3529594.ece
http://www.telegraph.co.uk/news/uknews/1581390/UK-student-dies-after-snake-bite-in-South-Africa.html
It's definately serious stuff, but what an error by the first aiders.