The Yearbook editorial team welcomes constructive criticism. Even though we have correspondents and editorial associates in a number of european countries, a comprehensive reference work such as the Yearbook can never be 100% complete. For this reason we are grateful for additional information, suggestions and advice on any omissions and errors. If your company or organisation is not included in the Yearbook even though you are operating in the energy and raw materials industry (you can check this by running through the index of companies and index of persons), please send us an email to yearbook@vge.de with details of the relevant information or advice. We would like to point out that all entries in the Yearbook are free of charge! How to contact the Yearbook editorial staff: Ines Henning: Tel. +49(0)2054/924-113 (before 14.00 hrs) VGE Verlag GmbH, Montebruchstraße 2, 45219 Essen Postal address: Postfach 185620, 45206 Essen Fax +49(0)2054/924-149   E-Mail yearbook@vge.de