Thought that fellow chainsaw operators would be interested in seeing this tourniquet developed by the military for Afgan use and is now being issued to UK ambulance teams. It looks like a useful piece of kit that can be self applied and maybe prevent loss of life.
This link shows how to use it
They can be bought on ebay or on spservices http://www.spservices.co.uk/item/Bra..._0_3738_0.html
I hope no one ever has to use one.