𝕸 Fuel, Light

Charcoal Burners in "Worst Jobs" - Timeline > .

https://youtu.be/7jgu7EJ9A8A?t=23m43s
https://youtu.be/7jgu7EJ9A8A?t=27m45s

Candle Making ..

Charcoal Burn ..

Daily Life .. 

Kilns, Furnaces ..
Rush light to tallow ..
Oven - cob, earthen ..  

Wood use - Charcoal ..

𝕸 Chemicals, Explosives ..