Casgliadau Arlein

Letter and a graph. The letter is typed in black ink of pale blue/white paper. Ewbank and Partners Limited headed paper. Signed by J.O.Pearce in blue ink. The graph is handwritten in blue ink on graph paper (white paper with brown printed graph lines). Letter and graph from J.O. Pearce of Ewbank and Partners Ltd. to E.I. David of Powell Duffryn Ltd. regarding coal dust weighing at Bargoed Power Station. Loose within pink/peach card file with other documents relating to Middle Duffryn and Bargoed High Pressure Station.