A review of some of the Western Maritime catchment and coastal petrologic causes of slip planes and runoff during the 50 years since IH was established Rodda McCulloch UCW Civil Engineer Slaymaker Howe Taylor Kidson Bowen Davies Unwin Lewin Watson UCW Geology JP Bell Forestry Wales encounters of a pioneer kind in Research 1967 2013 Mike Stagg RJ Chorley theory energy gradients ICE Hydrology Group