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. The annotation indicates that the plan was received on 20th April 1990 and has been superseded by DWF87.25 (an earlier version of which is now numbered MP/DER0054).
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