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The content acknowledged below is Proprietary (see terms and conditions [Tip: hold Ctrl and click a link to open it in a new tab. (Hide tip)] ). This content is made available under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 Licence

Cover image: TheLeadSA in Flickr made available under Creative Commons Attribution-NonCommercial-ShareAlike 2.0 Licence.

Grateful acknowledgement is made to the following sources for permission to reproduce material within Part 1 of this block:

Figure 7 (top left): © Tim Kendrick, 1998, (below left): © Martin Bond/ Science Photo Library, (top right): © Sandia National Laboratories/Science Photo Library, (below right): © NASA;

Figure 12(a) © J.J. Photoservices, (b): Courtesy of the Humber Bridge Board;

Figure 14(b) Courtesy of Superform Aluminium;

Figure 18 Courtesy of Vectis Auctions;

Figure 21 Courtesy of Cosworth Castings;

Figure 41 Courtesy of Traub-Herbert, UK;

Figure 47 The Plane Picture Company/John M. Dibbs.

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