As a West Virginian, I always used Kingsford charcoal because they have a plant in our state. There is a big production facility near Parsons in Tucker County, snuggled next to the Shavers Fork of the Cheat River. It is adjacent to the Allegheny Highlands bicycle trail, which I wrote about in my previous blog a few years ago. Here is a picture of my bike parked next to the sign with a portion of the employee parking lot visible in the background.
It is a similar process to what was used in the coke ovens throughout the West Virginia coalfields, where coal was placed in brick ovens, the door sealed to keep out oxygen, and then heated by burning coal underneath. The result was called coke and when it was burned, this drier, purer coal produced much higher temperatures, perfect for the many steel mills we once had in Wheeling, Pittsburgh, Youngstown, etc. You can still see decaying remnants of these coke ovens in many places around West Virginia's coal regions.