Jan Demczur saved himself and five others by using a squeegee to cut through a sheet rock wall and get himself and the others out of the North Tower of the World Trade Center on September 11th. The device has now been donated to the Smithsonian. I am looking at the name, and I could bet that Jan Demczur speaks Polish. He probably thinks Polish too. I remember the most disappointing thing about escaping to the west as a child in 1981 was that in Germany there was a tool or toy for everything. One needed to be creative in Poland. One needed to buy the right tool in the west.
update (4/8/05): Here is indeed Jan Demczur in his own words.