Coal company plans of Varteg area
Plan of various slopes at Blaenavon
Plan of mine workings at Pwll Du
Mine plan of Blaenavon
Mine plan of Big Pit Colliery
Mine plan showing Wrenavon Slope
Mine plan showing Garn Pits
Mine plan showing Kear's Slope
Geological plan of Blaenavon
Ordnance Survey map of Blaenavon
Plan of Blaenavon Ironworks
coal company plan of Blaenavon
Coal company plan of Blaenavon
Blaenavon Engine Pit