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Amgueddfa Cymru – Museum Wales
Typed in black ink on cream paper with handwritten details in pencil. Title: 'Analysis of consitituents of the burden (excluding coke) and flue dust'. Table containing data relating to tests at Cardiff (high phosphorus), Cardiff (low phosphorus), Powell Duffryn Bargoed, Bedwas, Blaenavon, Parkgate (S. Yorks), Barnsely Main and Monkton Main.
