Electric Steel Furnace with Excessive Carbon Detonating
A 37-second video of an electric furnace operating. Be sure to play it with the audio on. There are no more bangs during the last 9 seconds so you can stop it early. I do hope Facebook doesn't fink out and later loose this video link.
This is probably one of those plants for which the electric company charges reduced fees if they agree to shutdown during a few days of the year when electricity usage is at its highest. Even in the northern states, this is during the summer when all of the air conditioners are running a significant fraction of the day. I'll bet the employees are more than glad to take the hot days off.