The first time I ever heard the word Klim was on a TV special about the Great Escape and they showed the excavation where they found old Klim cans. Klim is powdered milk and is simply an inverse spelling. BUT... I am seem to be off topic for winter preparedness!

"Klim cans were approximately four inches in diameter and three inches deep. The metal in the cans could be fashioned into a variety of different tools and other useful items such as scoops and candle holders. Klim cans were instrumental in the escape attempt from Stalag Luft III. In the book Under The Wire, William Ash and Brendan Foley tell how World War II prisoners of war removed the bottoms from the tins and hooked them together to form airtight pipes to provide air while digging escape tunnels. Scavenged Klim cans were used in the construction of the extensive ventilation ducting in three tunnels that lead out of the prison camp. One former prisoner at Stalag Luft III, Charles Huppert, told how prisoners became expert at turning tin cans into tools. Huppert said, "We used Klim tins for everything that we made, because you could cut the ends out, and have a large piece of tin to work with. You can straighten that out flat, and make a ... join them together in a locked joint, such as this, and take your wooden mallet and hammer them down. Then you take your backside of a knife and bear down on that, with a lot of pressure on both sides of that crimp, so that the tin will not separate, in order to make the tools that are used in the tunnels: the digging tools, the funnels, and the lamps to give light." - Wikipedia