The deep pit reaches a depth of around 650 feet, starting in the Coal Measures and encountering the Crease Limestone layer at about 300 feet below the surface. Nearby, the land pit was sunk approximately 350 yards west 32 degrees south of the deep pit.
Publications (4)
(1927); BGS - Mineral Resources of GB (c1920s) Vol X 2nd Ed - Iron Ores - Hematites of Forest of Dean, South Wales; 115 pages
Hart 1983 p 290
Oldham, Tony (1998); Mines of the Forest of Dean; 86 pages