From Cooperation to Complicity is a study of the Degussa corporation, a firm which played a pivotal role in the processing of plundered precious metals in Nazi-occupied Europe and controlled the production and distribution of Zyklon B, the infamous pesticide used to gas the inmates of Auschwitz and Majdanek concentration camps, during the Third Reich. The author traces the extent of the corporation's involvement in these and other Nazi war crimes, including the Aryanization of Jewish-owned property and the exploitation of forced labour, and delineates the motivations for such conduct.

' … excellent new study … Hayes lays to rest certain myths that persist with respect to many German corporations during the Third Reich … the moral grey areas that define Degussa's story during the Third Reich make for gripping reading …'

Source: Holocaust and Genocide Studies

'Hayes has produced a remarkable and highly readable book. From Cooperation to Complicity is impressive in overview, rich in detail, and , not the least, balanced in its judgements.'

Source: Zug