Kilns, Furnaces

Primitive Technology: Brick Firing Kiln > . 

Primitive Technology: Fired Clay Bricks > .

Primitive Technology: Crossdraft kiln > . 

Primitive Technology: Pottery and Stove > .

Pyrotechnology | Primitive Technology >> . 

Medieval Professions - KoHi >> .  

Reverberatory Furnace > .
https://en.wikipedia.org/wiki/Reverberatory_furnace .

Early Metal Working ..

Glassmaking ..  

Iron furnace ..

Iron - furnaces, foundries, smithing .. 

Metal - Bronze, Foundry, Weapons .. 

Oven - cob, earthen ..