BW165/34/3
"B.C.N. Conduit Colliery"
Plan and section showing coal workings between Hednesford Road Bridge and Watling Street Bridge over the Cannock Extension Canal. Note "Note Shallow Coal Workings edged and striped Blue. Deep Coal Workings edged and coloured Red. Statutory Limit edged Green". WF Clark MICE Mining engineer Aldridge.
May 1917
BW165/34/3
1 sheet