Bill wrote: I don't recognize deep-dish as the principal style you find in the city (away from where tourists hang out).
I agree. I grew up in the city (Back of the Yards and Archer Heights), and I don't think I tasted my first deep dish until I was about 13 or 14. Around here, it was always places like Vito & Nicks, Palermo's, Chesdan's, Falco's, etc. I think Giordano's was my first deep dish, and even that's not the classic deep dish, but rather stuffed. I must have been about 16 or 17 when I first ventured into Uno's or Gino's.
Anyhow, if I remember correctly from my conversation with Jay, Coalfire uses a mix of wood and coal.