International Mine Water Association

Bish, M. G. (1986): Opencast Coal mining in South Wales. – Int. J. Mine Water, 5 (3): 1-12, 5 fig.; Madrid.

Fernández-Rubio, R. (1986): Water Problems in Spanish Coal Mining. – Int. J. Mine Water, 5 (3): 13-28, 6 fig., 5 tab.; Madrid.

Singh, R. N., Hibbert, S. & Fawcett, R. J. (1986): Studies in the Prediction of Water Inflows to Longwall Mine Workings. – Int. J. Mine Water, 5 (3): 29-45, 7 fig., 3 tab.; Madrid.

Reed, S. M. & Singh, R. N. (1986): Groundwater Recovery Problems Associated with Opencast Mine Backfiills in the United Kingdom. – Int. J. Mine Water, 5 (3): 47-73, 5 fig., 2 tab.; Madrid.