What is an industiral piercing?

First off lets see if we are talking about the same piercing....An industrail, and this miss spelling is on purpose, is thru the front cartilag near the top of the ear, and thru the back cartilage with a long barbell....If done right the rest of the inside of the ear will not be pressing against the barbell.
What does it represent??? Nada, that I know of......Dont read too much into all the symbolism hype. Anybody might wear such a piercing and for every one who does, they probably have a different story or reason behind it.......TatuBaron