Chris Ealing graduated in 1964 after a student apprenticeship with English Electric. His career has been spent with design, manufacture, and construction contracting companies serving the civil nuclear power industry. He progressed from design engineer to design manager, business director, and finally engineering director before retiring in 2000. While not a seismic specialist, experience of projects with a seismic requirement was gained in the USA, Romania, Hungary, and Japan, in addition to the UK. He is the author of numerous technical papers on the subject of dry storage of spent nuclear fuels and was Chairman of the IMechE Nuclear Power Committee for a number of years. John MacFarlane is a chartered mechanical and chartered civil engineer with over 30 years' experience in the heavy mechanical, civil, and nuclear industries. For the past 22 years, he has had a specific interest in the seismic qualification and design of nuclear power plant structures, systems, and plant gained in the UK and overseas. He has published a number of papers nationally and internationally, and is currently Group Head of Civil Engineering, for British Energy.