Mitcheldean Road & Forest of Dean Junction Railway extraction industry in the Forest of Dean. The Monmouth and Hereford Railway was incorporated in 1845, but limited in scope by Parliament, and the powers were not exercised. However, in 1851 the "Hereford, Ross and Gloucester Railway" received its authorising Act of Parliament, and it opened a line on a similar alignment from Hereford to Grange Court on 1 June 1855. The GWR itself built the connecting section from Grange Court to Gloucester, and the South Wales Railway opened its line progressively from Grange Court to Chepstow. The South Wales Railway took over the "Forest of Dean Railway", successor to
Forest of Dean Coalfield feature of the Forest of Dean Coalfield is that its edges are almost entirely exposed at the surface. Mining in the coalfield has always been hampered by the excessive amount of water encountered underground - trapped by the basin-shaped strata. Water drains into the basin by general percolation and, more directly, via surface watercourses. For much of their length, streams in the area run over impervious clay deposits, but, where valleys cut through the rim of the basin, carboniferous limestone and sandstone are exposed, allowing water to penetrate underground via swallow holes, cracks, and fissures. Water also enters the basin