Edited by:
M. Eddleston, North West Water Engineering, Chadwick House, Warrington Road, Risley, Warrington WA3 6AE
S. Walthall, North West Water Engineering, Chadwick House, Warrington Road, Risley, Warrington WA3 6AE
J. C. Cripps, Department of Earth Sciences, University of Sheffield, Sheffield S3 7HF and
M. G. Culshaw, Engineering Geology and Geophysics Group, British Geological Survey, Keyworth, Nottingham NG12 5GG