> Jed sez: ... > I mean hand warmers. "Disposable chemical pocket warmers." Little plastic > bags full of chemicals, mostly iron filings, I think. You smoosh or bend > the bag to mix the chemicals, and it gets hot for several hours. I guess it > puts out a couple of watts. I am trying to think of what they are called . > . . Ah, "kairo." See: > > http://www.scienceiq.com/ShowFact.cfm?ID=212 > > http://www.sportstek.net/hotteeze.htm > > Apparently you have to admit air into the bag. It would be interesting to > see what would happen if a whole box of these things was damaged. > > I have not seen these in the U.S.
They do exist in the U.S. I used them on a Wisconsin skiing outing back in the 70-80s. They worked quite well keeping my hands warm on the chair lift. Regards, Steven Vincent Johnson www.OrionWorks.com
