The handbook provides a comprehensive collection of unique photographs, detailed schematics, concise analyses, precise measurements and recommendations. The work is organized in such a manner that engineers and scientists can use the observations to derive their own reasoning about aging of materials, to learn and subsequently improve their knowledge on specific material ageing issues. A remarkable job of  gathering valuable data has been necessary for more than 2 years. The result is a tremendous collection of 2400 pages on 40 years of expertise on components extracted from Light Water Reactors.