Videos:

Burn Bowl and Boiling Water:  Instinct Survivalist:  Demonstration of coal burning with an added trick of adding clay to assist if area is burning thin.

Primitive Technology: Burn Bowl, Pine Pitch and Boiling Water: Primitive Skills:  In this demonstration of coal burning, he also uses pine pitch to seal cracks and demonstrates rock boiling.

Articles:

Photographs:

My Pinterest collection of Coal Burning