Boneburn Yards is where phosphorus and phosphorus-based manufacturing is based in Begma City.
Phosphorus is made by distilling off phosphorus vapor from precipitated phosphates heated in a retort. The precipitated phosphates are made from ground-up bones that had been de-greased and treated with strong acids, thus the name "Boneburn Yards." Begman matches use white phosphorus in their composition, which are dangerous due to its toxicity. Murders, suicides and accidental poisonings result from their use. (An apocryphal tale tells of a woman attempting to murder her husband with white phosphorus in his food, which was detected by the stew giving off luminous steam). Exposure to the vapors gave match workers a necrosis of the bones of the jaw, the infamous "phossy jaw."