A History of Research and a Review of Recent Developments

Acknowledgements
The reports from which the references to research in support of UK activities
during the Second World War have been drawn (e.g. the publications of
Christopherson and others) are available from the Institution of Civil Engineers
Library, London, or from the UK Public Records Office at Kew. A paper by
Walley [8.20] gives full details of these collections.
The major part of section 8.2, dealing with the effects of explosions on
civil bridges, has been taken from work carried out by the author with the
support of the Defence Research agency (Chertsey).
The review of historical developments in explosive technology given in the
Introduction and Chapter 1 has been drawn from a number of sources dealing
with scientific history, including textbooks, the Encyclopaedia Britannica, and
the proceedings of learned societies.
The cover painting is by the author.
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