1. The environmental impact of an opencast operation in the Forest of Dean, England.;Journal of Environmental Management,,1984
2. Coal mining and its effect on water quality.;Proceedings of the American Water Resources Association,,1974
3. Barrier pillar legislation in Pennsylvania.;Transactions of the American Institute of Mining Engineers (Coal Division),,1930
4. Aston, T. R. C. 1982, Hydrologeological aspects of rock mechanics and mining subsidence around longwall mining extractions. Ph.D thesis, University of Nottingham.
5. On the great fault called the Horse in the Forest of Dean Coalfield.;Transactions of the Geological Society,,1842