🚀 go-pugleaf

Yes, the candle works.  If you are ever in Chicago, visit the Museum of
Science and Industry.  Among the exhibits there is a "working" coal mine
that you can take tours through.

At the end they demonstrate the miners lamp.  I recall it had something
other than a candle in it, but all that matters is a flame.  If the wire
mesh around the candle is intact, the flame will flash but will not pass
the screen.  If even a tiny hole exists in the mesh, the mine itself will
explode.  There are boxes at the top of the shaft to test the lamps before
entering the mine.  I believe that they are still used to test for gas
by mine engineers, but the average miner uses electric lights.

Bob Campbell - Hewlett Packard Information Technology Group
	       hpdsd!campbelr@hplabs.HP.COM