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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.1 water tube 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 17th July, 1941. Also, 23 July 1941 is stamped in purple ink. Contained loose within a moroon hardback file with all other documents under accession number 85.184I/4.
