Additional photo credits / -sources

Source: Nigel Young

Source: Reederei Peter Deilmann, Neustadt/Holstein

Source: University of Sydney, Australien

Source: DEUTZ AG, Köln

Source: MC Williams Forge Company Inc., Rockaway, NJ

Source: Müller-Weingarten AG, Weingarten

Source: SCHULER AG, Göppingen

Source: Picanol NV, Belgien

Source: Ferrum AG, Schweiz

Source: Krauss-Maffei Process Technology AG, München

Source: F1online

Source: CATERPILLAR POWER GENERATION SYSTEMS, Kiel

Source: CATERPILLAR POWER GENERATION SYSTEMS, Kiel

Source: F1online

Source: Günter Schneider, Berlin

Source: GERB

Source: GERB

Source: GERB

Source: F1online