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A letter from the British Engine Boiler & Electrical Co. Ld. to Powell Duffryn Associated Collieries Ld. regarding the examination of the No.4 Lancashire boiler at No.1 pit, Cwm Cynon Colliery. Letter typed in black ink on off-white, British Engine & Electrical Co.Ld. headed paper. Letter dated 19th March, 1938. The letter is signed in black ink, with another two signatures, one in black ink and the other in green ink. Contained loose within a moroon hardback file with all other documents under accession number 85.184I/4.
