The sheet is drawn by 'P.T.B.' and 'D.G.' and has been amended by 'M.F.' to April 1989. It is marked 'See 87.23 for laid stones in 051, and 060/016/062 boundaries'. 87.23 is not included with these drawings.
This is part of the Job: PF/DER/002 Drawings and overlays of the furnace site; within the Volume: PF/DER Derwentcote Steel Furnace, Derwentcote, County Durham; within the Series: EHC01/022 English Heritage Plans and Measured Drawings; within the Collection: EHC01 English Heritage(EH):Archive