What ever happened to Push Button light switches?

CY: In the old days of coal stoves, the operator would shovel a bunch of coal into the stove. It was necessray to then take a pointed rod and "poke a hole in it" or the coal dust would build up. The pile of burning could would explode with a bang, and wake up the people up stairs. So, the reminder to the boy "be sure to poke a hole in it". I was told this by my father. When he was a boy, he was the coal shovel person for the house.

CY: I've found they have less heat than hardwood. But, that doesn't surprise me. I had a good fire going one time with shelled corn. Needed a lot of draft, that corn tended to make smoke explosions.